The NYPD sent a paid informant to surveil, befriend and ultimately drive a Black Lives Matter protester to attack a police van last month, according to a new federal complaint unsealed on Wednesday.

The civilian informant — identified in the filing as the NYPD’s “confidential source” — was involved in the arrest of Jeremy Trapp, a 24-year-old Brooklyn man accused of sabotaging an NYPD vehicle.

“At best, Mr. Trapp is unsophisticated and easily susceptible,” his defense attorney, Ashley Burrell, said during his arraignment on Wednesday afternoon.

According to federal prosecutors, Trapp met the NYPD informant outside Brooklyn Criminal Court on July 13th, as protesters gathered to demand the release of individuals arrested during a demonstration in Bay Ridge.

Trapp told the source that he thought cops were racist, that he wanted to harm police, and that he was previously involved in burning an NYPD vehicle, according to the complaint. After exchanging phone numbers, the two arranged to meet in the informant’s car.

During their first meeting, the 24-year-old allegedly told the informant that he wanted to burn down the Verrazzano-Narrows bridge so that “white supremacists” wouldn’t be able to get from Staten Island to Brooklyn. The following day, the complaint states, the informant drove Trapp to the bridge to take photographs.

On July 17th, the informant again picked up Trapp from his mother’s home. They drove to Sunset Park, where they found an unattended NYPD van. Trapp, using a scissor-like tool, allegedly crawled under the vehicle and cut part of the brake lines, while the informant acted as a “look out.

The informant then drove Trapp to City Hall, where they walked around the protest encampment, according to the complaint. Trapp was arrested shortly after on charges of reckless endangerment and criminal mischief. He was released by the Brooklyn District Attorney on his own recognizance.