Police are searching for a man who robbed and assaulted a man on a southbound F train on Feb. 13, according to police. Officials said around 10 am, a 73-year-old man was approached by an unknown man as the F train reached the York Street station. Police said the man approached the victim, punching him in the face, and took his cellphone before leaving the station. The victim refused medical attention. Click here to read more on pix11.com.