STATEN ISLAND (WPIX) — A 39-year-old man slapped former Mayor Rudy Giuliani inside a Staten Island grocery store on Sunday afternoon, police said.

Giuliani, 78, was in a ShopRite store around 3:20 p.m. when he was attacked, police said. He was slapped in the back.

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“What’s up, scumbag?” the alleged attacker said, according to an NYPD official.

Police took the suspect into custody. Charges were pending Sunday evening.

According to The Hill, the suspect was a grocery store employee.

Giuliani told the New York Post the slap almost made him fall over. Surveillance video obtained by the news outlet shows the suspect approach Giuliani and a small crowd of people around him. The man slaps Giuliani on the back and continues walking. A person standing next to Giuliani rubs his back as the alleged assailant appears to continue speaking to the former mayor. A group of people who were assembled around Giuliani help separate the two, the video shows.

WABC reports Giuliani turned down medical attention.

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His son, gubernatorial candidate Andrew Giuliani, tweeted “MAKE NEW YORK SAFE AGAIN!” several hours after the attack.