The deceased was killed at Bau Primary School on Tuesday, April 3.
Madang Governor Peter Yama, who was in Port Moresby attending Parliament, flew back to the province on Thursday (April 12) to attend to the situation.
Upon arrival, Yama held various meetings with leaders from the area and asked them to return the head of the slain teacher.
The head was returned late Thursday night to the provincial administration staff, including Governor Yama.
