Police in Portland, Oregon, are investigating whether the man charged with killing two men and wounding another on a light-rail train stabbed a man in the back earlier this year.
Portland police Sgt. Chris Burley said Friday that 35-year-old Jeremy Christian is "a main suspect" in the stabbing that happened Jan. 27 outside Voodoo Doughnut in downtown Portland.
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Burley says the investigators are not releasing additional information about the case.
KPTV reported in January that Voodoo Doughnut employees called 9-1-1 just after 5 a.m. when a fight broke out between four or five homeless people. Police said the 40-year-old victim was taken the hospital with an injury that was not life-threatening. Police described him as uncooperative.
Christian has been in jail since May 26, when police say he stabbed three train passengers after going into an anti-Muslim tirade. He pleaded not guilty to aggravated murder and other charges.