Jail officials in Georgia's most populous county are violating the constitutional rights of people in their custody by failing to protect them from violence, using excessive force and holding them in filthy and unsafe conditions, U.S. Justice Department officials said Thursday.

The Fulton County Sheriff's Office doesn't adequately protect jail detainees from violence by other detainees, including stabbings, sexual abuse and killings, federal officials contend in a lengthy report that details alleged abuses and offers remedial actions that can be taken. Vulnerable populations, including people who are gay, transgender, young or who have serious mental illness, are particularly at risk from the violence, which causes physical injury and long-lasting trauma, the report says.