An early morning mugging marked the fourth such incident in Central Park this month, police said.

The victim, 69, was walking home in the area of 77th Street and Center Drive when a man grabbed his shirt and said “Do you have anything of value? Give me your watch.”

The suspect fled with the watch, and has not yet been found, police said.

Earlier this month, police arrested two teens accused of punching a 17-year-old girl in the face and robbing her of the iPhone and purse on the Heckscher Playground.

Police have circulated another sketch of a suspect wanted after allegedly pulling a knife on a woman at 109th Street and East Drive and stealing her wallet.