SUNNYVALE (CBS SF) — A 20-year-old man was struck and killed by a Caltrain in Sunnyvale Sunday morning, according to Caltrain officials.

Train No. 426 was traveling south near Mary Avenue where it struck and killed a 20-year-old man around 11:40 a.m., Caltrain officials said.

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Caltrain officials said a preliminary investigation indicates the collision was an intentional act.

There were approximately 100 passengers on board the train at the time of the incident, according to Caltrain officials. Officials said no one on board reported any injuries.

As of around 1:30 p.m., officials said a coroner was at the scene.

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It’s the 10th fatality on Caltrain tracks this year, agency officials said.

The involved train’s route was terminated at Mountain View and Caltrain officials said they are using a single track to go around the collision scene.

Trains are delayed approximately 20 to 30 minutes.

Officials from the Santa Clara Valley Transportation Authority said route 55 was rerouted near the Sunnyvale Caltrain station.

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