NEW YORK -- Police are looking for a man they said was caught on camera striking a woman in the head on the Upper East Side. 

It happened on Park Avenue at around 6 a.m. on July 14. 

The man was walking by the 27-year-old woman when he hit her in the head with an object, according to police.

He was unprovoked, police said. 

The woman was taken to the hospital and treated for a cut on her forehead. 

Anyone with any information is asked to call the NYPD's Crime Stoppers hotline at 1-800-577-TIPS (8477), or for Spanish, 1-888-57-PISTA (74782). You can also submit a tip via their website or via DM on Twitter, @NYPDTips. All calls are kept confidential.