KANSAS CITY, Mo. -- A three-alarm fire on Kansas City's east side damaged two warehouses early Monday morning.Firefighters were called to East 12th Street and Crystal Avenue at about 1:30 a.m.Investigators at the scene said the fire started in a two-story warehouse and spread to another warehouse.The warehouse where the fire started had several wood pallets and propane tanks inside. There were a lot of explosions inside the warehouse.There was another warehouse attached to the one where the fire started, but crews were able to keep it from spreading.The cause of the fire has not been determined. No one was hurt.