Seventeen inmates tunneled their way out of a prison in the Mexican border city of Reynosa, authorities in the northern state of Tamaulipas said Wednesday.
The prison warden and eight guards are being questioned by prosecutors on suspicion of complicity in the jailbreak, the state Public Safety Office said.
The absence of the 17 escapees was noted Tuesday and the prison immediately activated the standard protocol in such cases, conducting a head count and search under the supervision of an agent from the federal Attorney General’s Office.
Authorities soon determined that the inmates escaped through a tunnel leading from the prison laundry, the Tamaulipas state government said.
Federal police and army troops were dispatched to reinforce security at the prison in Reynosa, a city just across the border from McAllen, Texas.