Teenager turns himself in after school gun threat

UPDATED: A teenage gunman suspected of threatening a female teacher at a high school in Gothenburg before fleeing the scene has turned himself in.

The 18-year-old phoned Gothenburg police, and was brought in for questioning late on Thursday afternoon.
Officers told local media that the suspect was being charged for possession of an illegal weapon, but refused to reveal any more details about the investigation.
The teenager's arrest follows an argument at Lindholmen Technical High School in Gothenburg just after 2pm, when a "young man" was reported to be threatening a woman with what appeared to be a gun. 

The incident took place following a row between the boy and a girl student inside the school building.
A woman teacher is understood to have tried to intervene. Then the male student who was understood to be "aged around eighteen" waved a "pistol-like object", a police spokesperson Peter Adlersson told the The Local.
"It looked like a gun but we cannot be sure if it was actually an air gun or not real at this stage," he said.
He added that the gunman told the woman that she "should not meddle" in the dispute, before hitting her with his hand and fleeing the scene.
A huge police operation was launched, with patrol cars and a helicopter scouring the city.
Adlersson told The Local that up to 30 police officers in the area were "incredibly busy" dealing with the case on Thursday afternoon. A police helicopter was also deployed.
The school was not evacuated, with lessons continuing on Thursday afternoon.