dave carlin has more on the investigation. >> reporter: reginald chance, 37, is charged with assault,sh in the window of an suv, police said. after the video was cut off, police believe chance pulled the driver, alexian lien, out of the vehicle and took part in a gang assault on the man. meanwhile, a man who stepped in to stop the beating and two other people who came to the aid of lien's wife and toddler daughter, who were in the range rover during the attack, will be honored sunday. state sen. adriano espaillat (d-manhattan) will accompany sergio consuegra and the two unidentified good samaritans at the site of the assault, on 178th street between wadsworth and st. nicholas avenues, where the three people being hailed as heroes will share their stories. at least three undercover police officers were riding with the pack during the incident one of whom as been placed on desk duty while nypd's internal affairs investigates, silverman reported. it is unclear if the other two who reported that six police officers, some off- duty, participated in the ride. two other men have been charged