A search is underway for an overdue vessel in the north west, near Robbins Island.

It’s understood four people left on a fishing trip yesterday, but have not returned to the campground at Montagu.

Concerned relatives called Police just after 8am this morning.

The vessel left the Montagu boat ramp at 5.30pm yesterday, with the four people on board.

The Westpac Rescue Helicopter and marine rescue vessels have been deployed to the area.