Seven people have been charged as being among members of a group who vandalized several federal buildings on New Year’s Eve in Center City.

Police said a group of 50, all dressed in black, broke windows and spray-painted slogans on the historic U.S. Customs House, at Second and Chestnut Streets; the Robert Nix Federal Building, at Ninth and Markets Streets; and the Federal Detention Center, at Seventh and Arch Streets, around 9 p.m. Thursday.

The group was also responsible for breaking windows and spray-painting the anti-police letters “ACAB” on a nearby sheriff’s van.

At the Nix building, police said someone in the group threw a brick through a window and that others broke more windows and spray-painted the building.

Charged with criminal mischief and related offenses were three people from Pennsylvania: Adam McVicker, 25, of Coatesville; Allison Donohue, 23, of Wallingford; and Josey Augustine, 31, of Royersford; as well as Dustin Callahan, 24, of Farmingdale, N.J

Charged with attempted arson, risking catastrophe, having an incendiary device, conspiracy, and related offenses were: Jacob Robotin, 25, of Willow Grove; Sydney Miller, 22, of Philadelphia; and Meredith Tooker, 26, no residence given.

Philadelphia Police Chief Inspector Mike Cram said Thursday that the detention center at Seventh and Arch streets was tagged with “Antifa-related graffiti.”

Cram added that several members of the group were searched and were found to be in possession of “numerous Molotov cocktails and some other devices which haven’t been identified.”