Realistic-looking wooden pistols carved and painted by an inmate at the Walls Unit prison in Huntsville, Texas, in 1964. They were intended to be used in an escape attempt but were discovered by employees of the prison.
Courtesy of Texas Prison Museum
Australian Prime Minister Malcolm Turnbull speaks at the government offices in Sydney on July 10. On Tuesday, Turnbull called for an investigation into allegations that teenagers were abused at a juvenile detention center in the northern part of the country.
In this 2014 photo, prisoners are closely guarded at Chikurubi Maximum Prison in Harare, Zimbabwe. According to state media, at least 200 male inmates were freed from this prison as a result of President Robert Mugabe's pardons.
After he was recaptured from breaking out of a maximum security prison in Mexico, Mexican drug lord Joaquin "El Chapo" Guzman is escorted by army soldiers to a waiting helicopter on Jan. 8.