[1][2] The facility previously experienced a jailbreak in June 2008, after a truck bomb breached the walls and allowed 1,000 prisoners to escape.
The tunnel ended in a house outside the prison that had been searched by security forces just two and a half months prior, yet with no suspicious activity was reported.
Reports have speculated whether it would have been possible to conduct the substantial earth-removal required for the construction of the tunnel without security forces being alerted.
We'll come back with more details as to what exactly happened and what we're doing to correct it.Pentagon Spokesperson Col Dave Lapan said that the Afghan government had not asked for US assistance in their investigation.
The head of the team investigating the escape, Mohammed Tahir, further cemented the likelihood of complicity from a number of people.