The NYPD is searching for a man they say sexually abused a 14-year-old girl in Bay Ridge.

Sources close to the investigation say he touched himself in front of the teenager while on a B63 bus.

"It's disgusting," said one commuter named Barbara.

The incident happened on Sept. 15 just before 6 p.m., traveling near 5th Avenue and Bay Ridge Parkway.

The girl was taken to the hospital for an evaluation.

"It's important that people and individuals feel protected, not unprotected," said John Melisenda, a commuter.

Anyone with information is asked to call the NYPD Crime Stoppers hotline at 1-800-577-TIPS (8477).