The vandal who had scrawled swastikas on a Manhattan firehouse and several ambulances over the past week was back at it again Saturday morning — except this time, fire marshals caught him in the act.

Jem R. Ibrahimov, 42, was busted around 8:30 a.m. at the Engine 93/Ladder 45/Battalion 13 station house on West 181st Street near Audubon Avenue in Fort George — which he had targeted twice before, the FDNY said.

Ibrahimov scrawled four ambulances outside FDNY EMS Station 13 on West 172nd Street near Amsterdam Avenue in Washington Heights with the hateful symbol Friday, cops said.

He also penned the Nazi symbol on the Engine 93 station house — along with the words “Nazi rapist pigs” and “pedophiles” on the doorway.

The scrawls came days after he allegedly scrawled “Nazi pigs die” and “Nazi pigs,” on the stationhouse Sunday and scribbled swastikas on four other ambulances.

Ibrahimov was charged with multiple counts of aggravated harassment, criminal mischief as a hate crime, making graffiti, and possessing graffiti instruments.

His arraignment was pending Saturday evening, and he has no prior arrests.

“I commend our Fire Marshals for their great investigative work to apprehend an individual who defaced FDNY facilities and apparatus with hateful symbols and language,” FDNY Commissioner Daniel A. Nigro said in a statement. “Thank you as well to the members of the NYPD Hate Crime Task Force for their investigation and collaboration with our Fire Marshals.”