A corporal at a maximum-security prison was left injured after an inmate serving a murder sentence attacked him.Robert David Pompa “brutally assaulted” a 56-year-old corporal on Saturday, according to the Idaho Department of Corrections.

El Salvador's President Nayib Bukele inaugurated a new maximum-security prison in Costa Rica, just weeks before Costa Rican elections focusing on crime issues. Despite the crime reduction credited to El Salvador's prison model,

Eric King served almost two years at the federal super-maximum security prison ADX Florence in Colorado.

Guatemala's interior minister accused gangs of killing seven police on Sunday in retaliation for the government's refusal to transfer gang leaders to a lower-security prison. Since Saturday morning, the inmates had been holding 45 guards and a psychiatrist hostage to protest the transfer of gang leaders to a maximum-security prison.

Guatemalan security forces moved Sunday to reassert control over a maximum security prison after inmate riots, as authorities reported deadly gang attacks against police in the capital while hostages remained held at other facilities.