York Regional Police were called to an apartment located at 75 Huron Heights Drive in Newmarket on July 21st at 7:20am.

On arrival police located 20-year-old Alyssa Lightstone of the town of Richmond Hill suffering from obvious signs of trauma. Lightstone was pronounced deceased at the scene from a gunshot wound.

On Monday July 23rd, Ali Nadderi of the town of Richmond Hill turned himself into police at approximately 2:30am. Nadderi has been charged with second degree murder.

Anyone with information is asked to contact the Homicide Unit at 1-866-876-5423 ext. 7865,