A Honduran police official says at least 18 inmates have died in a prison attack. Security Ministry spokesman Wilmer Torres says 31 prisoners were attacked by their cell-mates with knives and guns just hours after they were transferred Friday night to a prison in Tegucigalpa from San Pedro Sula, 110 miles (180 kilometers) north of the capital. The prisoners fought back, engaging in a bloody battle. Thirteen survived. Torres said the prison was under control later Saturday and that police are investigating a motive for the attack.