A MAN allegedly struck an acquaintance with a hammer and stabbed him with scissors while holding him captive overnight in Kallaroo this month.
Police said the victim then got hold of the scissors and stabbed his alleged attacker in the torso to escape.
Senior Sergeant Brad Burnett said both men ended up in hospital, but only the alleged offender was charged because the victim was acting in self-defence.
He alleged a disagreement between the two led the 37-year-old accused to attack the man, aged in his 30s, overnight at a Castlecrag Drive property on Tuesday, September 8.
He said the victim suffered a broken jaw when the man allegedly struck him in the face with a hammer.
The accused is also alleged to have stabbed him in the hand with scissors, before the victim turned the weapon on his alleged attacker.
Sgt Burnett said both men were taken to Joondalup Health Campus about 7am on September 9 and later transferred to Royal Perth Hospital. He said Water Police retrieved scissors from a drain near Joondalup Health Campus.
The man was charged with deprivation of liberty and assault with intent to cause grievous bodily harm.