(Portland, OR) -- A suspect who was armed with a knife and barricaded in an apartment building also tried to burn it down. The incident started late Friday night near Southwest 4th and Barbur Boulevard in Portland. Residents of an apartment building heard banging sounds. Police found a man broke into the basement and he was armed with a knife. He tried to set fire to a door. After several hours, police fired a chemical irritant into the basement and the man was taken into custody. Aaron Onufrock was treated at a hospital and then booked into jail on burglary and arson charges.