Shooting on Muni in Bayview leaves rider critically wounded

In this file photo a MUNI streetcar heads down Third Street in San Francisco. A 20-year-old city resident, was on the T-Third line around 12:25 p.m. Monday when he was confronted by a man who shot him in the upper body while the train was on Third Street between Oakdale and Palou avenues. less In this file photo a MUNI streetcar heads down Third Street in San Francisco. A 20-year-old city resident, was on the T-Third line around 12:25 p.m. Monday when he was confronted by a man who shot him in ... more Photo: Darryl Bush, The Chronicle Photo: Darryl Bush, The Chronicle Image 1 of / 4 Caption Close Shooting on Muni in Bayview leaves rider critically wounded 1 / 4 Back to Gallery

San Francisco police are investigating a shooting on a Muni light-rail car Monday afternoon in the Bayview neighborhood that left a man in critical condition.

The victim, a 20-year-old city resident, was on the T-Third line around 12:25 p.m. when he was confronted by a man who shot him in the upper body while the train was on Third Street between Oakdale and Palou avenues, police said.

The victim was taken to San Francisco General Hospital with life-threatening injuries, police said, and the gunman fled the area. Investigators were looking into what led to the shooting and whether it stemmed from a dispute.

The shooting took place at a busy intersection, and police are hoping witnesses will come forward. Officials asked anyone with information to call an anonymous tip line at (415) 575-4444.

Kale Williams is a San Francisco Chronicle staff writer. E-mail: kwilliams@sfchronicle.com Twitter: @sfkale