NEW YORK (CBSNewYork) – The NYPD wants your help finding the suspect caught on video in a shocking assault on a woman.

(credit: NYPD)

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The police department was scarce on details – not saying exactly when and where it happened – only indicating that it happened in Harlem.

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The video shows the suspect holding a skateboard and talking with a woman. A moment later, he swings the skateboard, hitting her in the face and knocking her out.

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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 on Twitter, @NYPDTips. All calls are kept confidential.