PORTLAND, Ore. - A man stabbed a TriMet bus driver in Southeast Portland on Wednesday afternoon, according to a police spokesman.
Police said the driver was wounded but they do not believe the injuries are life-threatening.
Investigators said Wednesday's attack -- along with an April attack of a TriMet driver in the area of 92nd Avenue and Flavel -- are believed to have been perpetrated by transients who frequent homeless camps along Interstate 205.
Officers and medics found the driver at SE Foster Road and 94th Avenue around 2:45 p.m
The driver was stabbed just outside an employee break room that is near the bus stop under the I-205 overpass.
Police said the suspect confronted and stabbed the driver, although investigators are still trying to figure out exactly what led to that confrontation.
The driver managed to walk to another bus and had that bus operator call 9-1-1, police said.
"Our thoughts and concern are with the operator," TriMet spokesman Roberta Altstadt said in a statement.
The suspect ran to the west down Foster Road after the stabbing, police said. He is still on the loose.
"We have video on all the buses and we have video on all the platforms and we're pretty sure we probably captured this guy on one or the other, so that will fortify the case of course when we pull that video," said Lt. Tony Silva.
A police spokesman described the suspect at a white man in his mid-30s with brown hair and tattoos on his neck. He was wearing black pants, a green t-shirt. Witnesses said it appeared the neck tattoos were some kind of checkerboard pattern.
TriMet plans to immediately boost security at both Wednesday's and April's assault locations. City officials, TriMet and the Oregon Department of Transportation will meet to address the transient camps, as neighbors have reported a number of problems related to the camps.
Google street view of the area: