Two videos have surfaced shedding light on what is happening behind closed doors at a New York federal building where people are being confined after being seized by officers on their way out of immigration court on the 12th floor, with the footage offering a rare look inside a controversial and closely guarded space that is part of Donald Trump’s anti-immigration crackdown.

The filming, shared by the New York Immigration Coalition (NYIC), captures one of several rooms at 26 Federal Plaza in Manhattan, on the building’s 10th floor, where accounts have emerged of people being detained in wholly unsuitable conditions with few basic provisions, but there had been no public access to direct evidence.

The footage in question shows about two dozen men confined in bare rooms, some lying on the floor wrapped in aluminum emergency blankets while others sit on benches, the City reported on Tuesday.