THE BRONX -A 14-year-old boy was stabbed during an altercation on Bronx River Parkway, police say. News 12 cameras captured video of a heavy police presence Monday evening on the parkway near East Gun Hill Road. Officers swept the busy roadway amid the evening rush, looking for any suspects believed to be involved. Police say the teenage boy was swimming in the river with a group of friends and got out during a fight. Investigators say they believe the victim was chased to the parkway, where he was stabbed repeatedly. Police shut down the southbound lanes for some time during their investigation, causing a major traffic backup with cars stretching for miles in both directions. News 12 is told that victim was in critical but stable condition at NYC Health + Hospitals/Jacobi. Police have not yet made any arrests. They are looking for multiple suspects.