Nassau police are searching for a man who stabbed a 17-year-old boy in Massapequa on Sunday.

Seventh Squad detectives said the teen was playing basketball at the Field of Dreams Park, 5660 Old Sunrise Hwy., about 2 p.m. when an argument broke out with another player. The player took out a small knife and stabbed the teenager in his left upper arm.

The teenager, after punching his alleged attacker and causing him to fall, ran home and called 911 for help. He was taken to a hospital and treated for his injuries.

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Police described the suspect as having a stocky build, fade-top hair style, dyed red hair and clean shaven. The suspect was believed to be in his 20s, and had a cross tattoo on his left forearm. He was last seen wearing black sweatpants, a blue V-neck T-shirt, and blue and orange sneakers. Police say he may also have a black eye after being punched.

Anyone with information can call Nassau County Crime Stoppers at 800-244-8477.