(Portland, OR) -- A man is facing charges after allegedly hijacking a TriMet bus in downtown Portland and barricading himself inside, prompting an hours-long standoff. Police say the suspect fired multiple shots just before boarding the bus at Northwest 5th and Glisan streets. He then allowed passengers to escape the bus before he took the driver hostage and ordered him to drove around the area. He eventually let the driver off the bus and holed up inside. Police arrested him after deploying gas canisters into the bus.