A police shooting involving federal park officers Tuesday night at San Francisco’s Aquatic Park led to the arrest of two suspects, one of whom was hospitalized with life-threatening injuries, authorities said.

San Francisco police responded to the scene at 9:31 p.m. after receiving reports of shots fired in the area. A firearm with an extended magazine was recovered at the scene, police said, and one of the suspects was booked into jail for possession of a firearm and possession of a firearm with a large-capacity magazine.

First responders took the second suspect, a man, to San Francisco General Hospital, where he remains in custody, said Brent Andrew, a hospital spokesman.

The U.S. Park Police officer involved was not injured, police said. Authorities are still investigating the incident.

U.S. Park Police and San Francisco police did not respond to requests for comment.

Gwendolyn Wu is a San Francisco Chronicle staff writer. Email: gwendolyn.wu@sfchronicle.com Twitter: @gwendolynawu