Neb. Rev. Stat. § 28-309: Assault in the second degree; penalty.

(1) A person commits the offense of assault in the second degree if he or she:

(a) Intentionally or knowingly causes bodily injury to another person with a dangerous instrument;

(b) Recklessly causes serious bodily injury to another person with a dangerous instrument; or

(c) Unlawfully strikes or wounds another (i) while legally confined in a jail or an adult correctional or penal institution, (ii) while otherwise in legal custody of the Department of Correctional Services, or (iii) while committed as a dangerous sex offender under the Sex Offender Commitment Act.

(2) Assault in the second degree shall be a Class IIA felony.