(Portland, OR) -- Police say they've arrested a topless woman accused of stealing a mail truck and then crashing it into a bus and a lamp pole. Police say the woman stole the mail truck around noon yesterday on Southeast Alder Street and took off north. Police say she crashed into a TriMet lift bus near Northeast Wasco Street and Northwest 162nd Avenue and kept going, eventually crashing into a lamp post and rolling at Northeast 155th Avenue and Northeast Fremont Street. She then allegedly took off running for 12 blocks before police caught up with her and arrested her. Investigators believe drugs were involved in the incident.