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HARLEM, Manhattan (PIX11) — A man repeatedly threw rocks at a family trying to enjoy time in a Harlem park June 5, police said Thursday.

At about 4 p.m. inside of Jackie Robinson Park, police said a man started throwing rocks at the family, who were sitting on a park bench. One of those rocks struck a 26-year-old woman in her shoulder.

When that rock bounced off the woman’s shoulder, it struck her 6-week-old son in the face, causing a scratch. Both the woman and child were treated by EMS on scene, police said.

The suspect fled on foot to another area in the park following the attack, police said.

Submit tips to police by calling Crime Stoppers at 1-800-577-TIPS (8477), visiting crimestoppers.nypdonline.org, downloading the NYPD Crime Stoppers mobile app, or texting 274637 (CRIMES) then entering TIP577. Spanish-speaking callers are asked to dial 1-888-57-PISTA (74782).