A GO bus was evacuated Saturday morning after a passenger said he had a bomb on board.

The bus, which was en route to Mississauga's Square One mall from Guelph, stopped along Highway 407 near Britannia Road after another passenger reported the man's suspicious behaviour to the driver.

Metrolinx spokesperson Anne Marie Aikins said the man was visibly agitated, and the bus driver immediately called police.

Ontario Provincial Police officers advised the driver to lock the doors of the bus and keep everyone inside until they could arrive.