The inmates are believed to have moved through the space to reach the prison's outer wall, then dug a tunnel that emerged in the middle of a dirt road just outside.
Shortly after Williams' death, the rapper chose to use a New York Post article about the actor's death to promote his popular television show Raising Kanan.
The video shows fellow New Yorker comedian Tracy Morgan passionately urging friends and fans "Don't cry for me" while talking about surviving a near-fatal limousine wreck in 2014.