A 16-year-old girl was fatally hit by a train while walking on Brooklyn subway tracks Tuesday evening, police said.

The teen was struck by a southbound G train near Park Slope’s 4th Avenue-9th Street subway station while she and a group of other people were walking catwalk.

The girl was found by first responders unconscious and unresponsive at the scene, where she was pronounced dead, police said.

She was on the catwalk inside the tunnel before she was hit, law enforcement sources said.

Other teens were seen fleeing the scene following the incident, law enforcement sources said.

No criminality is suspected, though the investigation is ongoing, police said.

Her identity was not revealed Tuesday night pending family notification.

Two other people were fatally hit by trains during separate incidents Tuesday inside a Manhattan and Brooklyn subway station, police said. No criminality was suspected in either case.

The trio of deadly incidents happened a day after a commuter was struck and killed by a Harlem subway train Monday evening, when the victim was pushed by an emotionally disturbed person with a criminal history in an unprovoked attack.

Source: New York Post