KATU now has an article out about it: http://www.katu.com/news/local/Multiple-people-injured-after-man-attacks-bus-driver-with-a-knife-172414861.html
Police: Man attacked a TriMet bus driver with a knife. Suspect restrained by passengers. 4 people total to hospital. Conditions unknown.
The TriMet scanner twitter feed says it all:
Beginning around 11pm (10/2/12)
woman attacked by man on 33 bus, other riders intervene and hold the man down and and beat the crap out of man
now man has been stabbed
Leonard was assaulted
The operator, Leonard, was either the 53 or 49 year old male who went to OHSU
Four people have been transported from the Oregon City incident on Molalla Ave. 3 taken to trauma center. Sunrise crew working on the story.
More to come as soon as the information is available...