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Police are investigating a shooting on a MAX train on East Burnside Street on Oct. 25, 2016.

(The Oregonian/OregonLive/File)

A teen is in custody on suspicion of firing one or two shots on a MAX train Tuesday night in Portland, police said, citing early information.

Police said they responded to the report of a shooting on a train at the East 102nd Avenue transit station around 8:35 p.m. No one was injured in the shooting, Portland police said in a news release.

A Good Samaritan held the male teen down until officers took him into custody, police said.

Police said the teen fired after a man confronted him -- apparently about money missing from the man's home. They said the teen and man know each other.

TriMet tweeted that Blue Line trains were disrupted because of the shooting.

The shooting is under investigation.

-- Jim Ryan

jryan@oregonian.com

503-221-8005; @Jimryan015