Kentucky ? Four prisoners remained hospitalized and hundreds of others had to be relocated Saturday after rioting inmates set their central Kentucky prison on fire.

Flames shot into the air during the melee Friday night, seriously damaging several buildings, and parts of the medium-security Northpoint Training Center continued to smolder nearly 24 hours later.

The 500 inmates who remained at the prison 30 miles south of Lexington were being compliant, said Jennifer Brislin, spokeswoman for the Kentucky Justice and Public Safety Cabinet.

About 700 others were being taken to other facilities across the state. In some cases that meant inmates were double-bunking or sleeping in gyms or other secure buildings inside prisons.