(Portland, OR)  --  Portland Police are looking for three teenage girls they say pepper-sprayed and spit on a TriMet bus driver earlier this month.  The incident happened June 9th near Northeast 42nd Avenue and Holman Street.  Police say around 11:40 that night, the three teens got on the bus near North Lombard Street and Interstate Avenue before assaulting the driver.  People can leave tips on the Portland Police Bureau's CanYouIDME website.