Apparent Trump supporter arrested, accused of flashing replica gun at Portland rally

PORTLAND, Ore. – Police detained two men driving by a peaceful “No Ban, No Wall” rally in Downtown Portland after witnesses told police that one of them held up what looked like a handgun.

Officers later learned that the gun was a replica BB gun, however during a search of the truck they found an unloaded AR-15 rifle.

Hundreds gathered in the Terry Schrunk Plaza at noon Monday for a permitted protest of President Donald Trump’s immigration policies. During the rally, a driver circled the block in a pickup truck that had "Trump" and American flags attached to the bed.

Someone called police to report that the passenger, later identified as 20-year-old Sergey Antonov of Battle Ground, Wash., held up the gun as they drove by the park.

Officers conducted a high-risk traffic stop nearby at Southwest 4th Avenue and Salmon Street.

Our news crew later saw police detain Antonov and the driver. Police seized the rifle and replica gun from inside the pickup.

Antonov was booked into the Multnomah County Jail on second-degree disorderly conduct.

The driver was released without charges, however police said they've taken the rifle for "safe-keeping." They say he can retrieve it at a later time.

This is a developing story; updates will be posted as information comes in.