The Major Case Bureau is investigating a Robbery that occurred on Friday, November 4, 2022, at 1:40 am in Roslyn.According to Robbery Squad Detectives, a male victim, 38, was walking to his car which was parked in front of 1432 Old Northern Boulevard. He was approached by three males, all dressed in black wearing masks. One of the males pulled out a knife and shoved the victim to the ground, he then punched the victim in the face and removed jewelry from him. The three subjects fled southbound on Old Northern Boulevard in a white auto. The victim refused medical attention at the scene. The investigation is ongoing.Detectives request anyone with information regarding the above crime to contact Nassau County Crime Stoppers at 1-800-244-TIPS or call 911. All callers will remain anonymous.