The Police Bomb Squad was called to a Mandurah home after reports of a man threatening to detonate a device on Saturday afternoon.
Neighbours say police and firefighters were called to the property on Leslie Street about 1:30pm.
A source, who asked to remain anonymous for security reasons, said a man “staying” at the address threatened to blow up the house with a bomb.
The man shouted, “If anyone went near his stuff, he would blow it up,” the source said.
“He had a detonator in his hand that looked like a GPS thing.
The device was described as WD-40 cans and a MAPP Gas canister taped together with wires hanging out
A man was witnessed under police guard before being put into the back of a patrol car.
It’s understood he was taken to Mandurah Police Station where he is expected to face charges.
Leslie Street was closed for several hours as investigators probed the scene but has since been cleared.