Four detainees have escaped from a federal immigration detention center in New Jersey, which has been the center of protests since its opening in May and where both a sitting congresswoman and Newark’s mayor have been arrested.

Two of four detainees who escaped from an immigration detention center in New Jersey on Friday have been captured, authorities said on Sunday.

Four detainees escaped when tensions boiled over at the ICE facility​ known as Delaney Hall in Newark, the Department of Homeland Security said.