A killer bank robber somehow strangled an inmate in another cell with a bedsheet ... penalty for Petty. ADX Florence is widely-regarded as the world's most secure prison for America's most ...

Petty, 56, was serving a life sentence at ADX Florence, the highest-security ... He was also convicted in 2015 of attacking ...

The DOJ seeks the death penalty for Ishmael Petty, an inmate indicted for first-degree murder at ADX Colorado, with emphasis ...

A man at the supermax prison in Florence who has been charged with killing another inmate may face the death penalty, the U.S ...

Federal prosecutors are looking to pursue the death penalty for a man accused of killing a fellow inmate while in a Florence, ...

Petty, 56, was serving a life sentence at ADX Florence ... in 2015 of attacking two prison librarians and a case manager who were delivering books to his cell, prosecutors said.