CONNECTICUT STATUTES AND CODES
               		Sec. 53a-19. Use of physical force in defense of person.
               		
               		
               	 	
               	 	               	 	
               	 	
               	 	
               	 		
      Sec. 53a-19. Use of physical force in defense of person. (a) Except as provided 
in subsections (b) and (c) of this section, a person is justified in using reasonable physical 
force upon another person to defend himself or a third person from what he reasonably 
believes to be the use or imminent use of physical force, and he may use such degree 
of force which he reasonably believes to be necessary for such purpose; except that 
deadly physical force may not be used unless the actor reasonably believes that such 
other person is (1) using or about to use deadly physical force, or (2) inflicting or about 
to inflict great bodily harm.
      (b) Notwithstanding the provisions of subsection (a) of this section, a person is not 
justified in using deadly physical force upon another person if he or she knows that he 
or she can avoid the necessity of using such force with complete safety (1) by retreating, 
except that the actor shall not be required to retreat if he or she is in his or her dwelling, 
as defined in section 53a-100, or place of work and was not the initial aggressor, or if 
he or she is a peace officer or a special policeman appointed under section 29-18b, a 
Department of Motor Vehicles inspector appointed under section 14-8 and certified 
pursuant to section 7-294d, or a private person assisting such peace officer, special 
policeman or motor vehicle inspector at his or her direction, and acting pursuant to 
section 53a-22, or (2) by surrendering possession of property to a person asserting a 
claim of right thereto, or (3) by complying with a demand that he or she abstain from 
performing an act which he or she is not obliged to perform.
      (c) Notwithstanding the provisions of subsection (a) of this section, a person is not 
justified in using physical force when (1) with intent to cause physical injury or death 
to another person, he provokes the use of physical force by such other person, or (2) he 
is the initial aggressor, except that his use of physical force upon another person under 
such circumstances is justifiable if he withdraws from the encounter and effectively 
communicates to such other person his intent to do so, but such other person notwithstanding continues or threatens the use of physical force, or (3) the physical force involved was the product of a combat by agreement not specifically authorized by law.
      (1969, P.A. 828, S. 19; 1971, P.A. 871, S. 5; P.A. 92-260, S. 4; P.A. 05-180, S. 1; P.A. 06-196, S. 184; P.A. 08-150, 
S. 49.)
      History: 1971 act specified that "reasonable" physical force is justified in Subsec. (a); P.A. 92-260 made technical 
changes; P.A. 05-180 amended Subsec. (b) to include a special policeman appointed under Sec. 29-18b within the purview 
of Subdiv. (1) and make technical changes for the purpose of gender neutrality; P.A. 06-196 made a technical change in 
Subsec. (b)(1), effective June 7, 2006; P.A. 08-150 amended Subsec. (b) to include Department of Motor Vehicles inspector 
appointed under Sec. 14-8 and certified pursuant to Sec. 7-294d within purview of Subdiv. (1).
      Cited. 166 C. 226. A defendant is entitled to a theory of defense instruction as a matter of law where evidence under 
this section is before jury. 178 C. 704. Cited. 182 C. 66. Duty of retreat where aggressor is co-occupant of dwelling 
discussed. 185 C. 372. Cited. 188 C. 237; Id., 653. Cited. 194 C. 376. Cited. 196 C. 519. Cited. 198 C. 454. Cited. 199 C. 
383. Cited. 200 C. 743. Cited. 203 C. 466. Cited. 204 C. 240. Cited. 206 C. 621. Cited. 207 C. 191. Cited. 209 C. 34; Id., 
75; Id., 322. Determined failure to instruct jury that defense of self-defense was applicable to lesser included offense was 
harmless error and reversed judgment of appellate court in State v. Hall, 17 CA 502. 213 C. 579. Cited. Id., 593. Cited. 
219 C. 295. Cited. 220 C. 602. Cited. 226 C. 917. Cited. 227 C. 518. Cited. 228 C. 335; Id., 851. Cited. 231 C. 484. Cited. 
232 C. 537. Cited. 233 C. 1; Id., 517. Cited. 234 C. 381. Cited. 235 C. 274. Cited. 242 C. 211. Subjective-objective test 
under section applies only to defendant: subjectively, defendant must believe that the use of deadly force is necessary, and 
objectively, that belief must be reasonable. 264 C. 723.
      Cited. 1 CA 609. Cited. 5 CA 590. Cited. 7 CA 223; Id., 457. Cited. 8 CA 667. Cited. 10 CA 643. Cited. 13 CA 139. 
Cited. 15 CA 34. Cited. 16 CA 264. Cited. 17 CA 200; Id., 326; Id., 502; judgment reversed, see 213 C. 579. Cited. 19 
CA 576; Id., 609. Cited. 20 CA 430. Cited. 23 CA 28; Id., 615. Cited. 24 CA 195; Id., 541; Id., 586; Id., 624. Cited. 25 
CA 456. Cited. 27 CA 49. Cited. 28 CA 469; Id., 833; judgment reversed, see 227 C. 518. Cited. 29 CA 262. Cited. 30 
CA 95; judgment reversed, see 228 C. 147; Id., 406; judgment reversed, see 228 C. 335. Cited. 31 CA 58; Id., 140. Cited. 
32 CA 687. Cited. 33 CA 616; Id., 782. Cited. 34 CA 58; judgment reversed, see 232 C. 537; Id., 368; see also 233 C. 517. 
Cited. 36 CA 506. Cited. 39 CA 563. Cited. 40 CA 189; Id., 805. Cited. 41 CA 255; Id., 584. Cited. 42 CA 348. Cited. 43 
CA 488. Cited. 44 CA 62. Cited. 45 CA 390. Cited. 46 CA 216. Sufficiency of jury instructions re duty to retreat discussed. 
48 CA 755. Statute construed to apply to person who also is usually lodged in those premises at night. 54 CA 26. First 
person to use physical force is not necessarily the initial aggressor. Initial aggressor is the person who acts first in a manner 
that creates reasonable belief in another person's mind that physical force is about to be used upon that other person. 99 
CA 736.
      Cited. 34 CS 612. Use of deadly force not justified when attack by assailants on third person had stopped and assailants 
were leaving. 35 CS 570. Cited. 38 CS 619. Cited. 43 CS 46.
      Subsec. (a):
      Cited. 186 C. 654. Cited. 187 C. 199. Cited. 225 C. 916. Not only must defendant's belief in the type of threat facing 
him have been reasonable, but the degree of force used in response must be evaluated for reasonableness as well. 256 C. 193.
      Cited. 3 CA 289. Cited. 5 CA 338. Cited. 22 CA 521. Cited. 25 CA 456. Cited. 29 CA 754. Cited. 31 CA 385. The 
subjective-objective inquiry into defendant's belief regarding the necessary degree of force requires jury to make two 
separate affirmative determinations in order for defendant's claim of self-defense to succeed. 68 CA 19. In the case of 
self-defense, eyewitness testimony of prior specific acts of violence perpetrated on defendant by his or her victim are 
admissible to show defendant's state of mind at the time of the killing. Id., 828. State proved beyond a reasonable doubt 
that the defendant was not justified in using deadly physical force. 75 CA 80. Where a particular jury instruction, when 
viewed in isolation, could have been construed as dictating a purely objective standard, it was held that the charge as a 
whole, adequately instructed jury as to both the subjective and objective aspects of the test involved in a self-defense 
analysis. Id., 500. Trial court improperly instructed jury on defendant's claim of self-defense by removing from its consideration the disputed factual issue of whether defendant used nondeadly force in self-defense. New trial ordered. 97 CA 679.
      Subsec. (b):
      Cited. 186 C. 654. Cited. 229 C. 916, see also 35 CA 520. Defendant's knowledge of ability to retreat is measured 
according to the subjective standard of defendant's actual knowledge. Defendant accused of felony murder may not rely 
on a claim of self-defense. 254 C. 184. Subdiv. (1) allows state to rebut self-defense claim by showing that defendant could 
have retreated safely before using deadly force; it does not follow that defendant is statutorily or constitutionally entitled 
to use evidence of retreat after using deadly force to bolster self-defense claim without permitting jury to consider other 
possible reasons for the flight. 279 C. 414.
      Subdiv. (1) cited. 31 CA 385. Cited. 34 CA 610. Cited. 40 CA 624. Cited. 43 CA 488. Cited. 44 CA 62. Retreat exception 
applies to a dwelling, not to a superior right to being outside the dwelling. 47 CA 91.
      Subsec. (c):
      Subdiv. (2) cited. 221 C. 58. Subdiv. (3) cited. Id. Subdiv. (2): Person who first uses physical force is not necessarily 
the initial aggressor under this section. Judgment of appellate court in State v. Jimenez, 30 CA 406, reversed. 228 C. 335. 
There was no occasion for trial court to instruct the jury on initial aggressor doctrine under Subdiv. (2) when the state did 
not claim that defendant was the initial aggressor. 246 C. 268.
      Subdiv. (1): Provocation element carries with it requirement that actor act with specific intent to elicit use of physical 
force by another. 19 CA 609. Subdiv. (2) cited. Id. Cited. 22 CA 521. Subdiv. (2) cited. 35 CA 699. Jury could have 
reasonably concluded from evidence presented that defendant was not justified in using deadly force against the victim 
because he was the initial aggressor. 75 CA 80.
      Cited. 41 CS 525.