An Anchorage grand jury has handed up a felony assault charge against Joseph Lock, 22, for recklessly discharging a firearm and injuring a woman in an apartment above his, according to the District Attorney's Office.

District Attorney Clint Campion said in a release that the bullet entered the victim's lower back and exited through her shoulder, puncturing her heart in the process.

"As a result of the gunshot wound, the woman is paralyzed below the waist," Campion said.

Anchorage police responded to the report of a woman who was shot at an apartment building on Mockingbird Drive shortly before 2 in the morning on June 2, according to the charges.

An investigation revealed that the bullet came through the floor of her apartment during a party in the apartment below. Lock was hosting a party there, prosecutors said.

"Lock told officers that he accidentally fired the round which struck the ceiling in his apartment," Campion said.