A teenager was stabbed early Saturday on a train on Metro’s Green Line, authorities said.

Metro spokesman Dan Stessel said the 15-year-old left the train at the Waterfront station and was taken to a hospital with a non-lifethreatening wound in his leg.

Stessel said evidence was found during an investigation of the 12:40 a.m. incident, but no arrests had been made.

He said detectives thought that the stabbing may have followed a dispute on the train.