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Section 13A. Assault, or Assault and Battery; Punishment
Section 13A. (a) Whoever commits an assault or an assault and battery upon another shall be punished by imprisonment for not more than 2 1/2 years in a house of correction or by a fine of not more than $1,000.
A summons may be issued instead of a warrant for the arrest of any person upon a complaint for a violation of any provision of this subsection if in the judgment of the court or justice receiving the complaint there is reason to believe that he will appear upon a summons.
(b) Whoever commits an assault or an assault and battery:
(i) upon another and by such assault and battery causes serious bodily injury;
(ii) upon another who is pregnant at the time of such assault and battery, knowing or having reason to know that the person is pregnant; or
(iii) upon another who he knows has an outstanding temporary or permanent vacate, restraining or no contact order or judgment issued pursuant to section 18, section 34B or 34C of chapter 208, section 32 of chapter 209, section 3, 4 or 5 of chapter 209A, or section 15 or 20 of chapter 209C, in effect against him at the time of such assault or assault and battery; shall be punished by imprisonment in the state prison for not more than 5 years or in the house of correction for not more than 2 1/2 years, or by a fine of not more than $5,000, or by both such fine and imprisonment.
(c) For the purposes of this section, “serious bodily injury” shall mean bodily injury that results in a permanent disfigurement, loss or impairment of a bodily function, limb or organ, or a substantial risk of death.