The woman aged 29 bashed up her Madang neighbour after she suspected the 34-year-old woman of gossiping about her.
The suspect was picked up outside the Yakapilin second hand market at the Four-Mile area.
Police say the woman will be charged with assault and threatening words.
The initial attack took place on Monday January 18 at the woman’s East Boroko residence.
The victim had to get treatment for a bruised jaw and a dislocated shoulder after the suspect severely based her up.
The suspect is now at the Boroko Police Station.