Max service was disrupted Sunday after the bomb squad was called in to investigate a suspicious device.

KGW

A MAX light-rail train travels through downtown Portland.

A trimet operator found the device after pulling into the Hatfield/Government Center Station in Hillsboro.

Peggy Lapoint with Trimet said it is standard procedure for all train operators to sweep the train after pulling into the last stop on the designated route.

The operator reported finding an object wrapped in plastic and duct tape, measuring about a foot in length and two to three inches in diameter on the floor of the train.

The object was later determined to be two aerosol cans of pesticide taped together to look like a bomb.

The max station was evacuated of all trimet employees, riders and passengers while the bomb squad investigated.

Lapoint said that all trimet trains were searched but nothing additional was found.

Passengers were bussed between the Hillsboro Central transit center and the Fair complex station during the closure.

Lapoint said that trimet planned to review security footage to determine who might have been behind the prank.