A fire broke out at one of the fire stations in West Palm Beach Saturday morning. According to a spokesperson with the West Palm Beach Fire Department (WPBFD), the fire occurred in one of the fire rescue ambulance trucks at around 4:30 a.m. at West Palm Beach Fire Station no. 4. Firefighters were asleep in the station and were alerted to the blaze when the fire alarms went off. There were no injuries, WPBFD says. WPBFD is investigating the cause of the fire.