Video shows a homeless man creeping up on a female staffer for New York Gov. Andrew Cuomo moments before he allegedly bashed her over the head with a cinderblock near a New York City construction site.

The victim, 51-year-old Lisa Cavanaugh, was walking home from work on Third Avenue near East 48th Street in broad daylight on Christmas Eve when Christopher Guzman, 28, allegedly attacked her, the New York Post reported.

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The video, obtained by the Post, shows a man following a woman and raising a chunk of concrete over his head. Then he rushes at her.

The attack left Cavanaugh unconscious with a 2-inch-deep wound, and she needed stitches, according to the report. She is expected to survive.

"Lisa is a valued member of Team Cuomo and we have been in constant touch with her and her family to make sure she has everything she needs in her recovery," Richard Azzopardi, a senior adviser to the governor, told Fox News in an email Friday. "We thank the NYPD for their quick work in apprehending the person they believe attacked her."

Guzman faces felony assault charges. He told police he lived in a homeless shelter on West 35th Street.

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Cavanaugh works for the governor’s office doing recruiting and appointments, according to her LinkedIn profile. The governor’s city offices are just a few blocks away from where the attack happened.

It's not the first time one of Cuomo's staffers has been the victim of violent crime in the city.

Carey Gabay, a former lawyer for the governor, was struck in the head and killed by a stray bullet during a suspected gang shootout at a Brooklyn festival called J'Ouvert in 2015.