More than 200 firefighters battled a massive blaze that broke out at a west Baltimore warehouse, disrupting Amtrak service in the area and prompting officials to move dozens of area residents. Commuter rail service was canceled Tuesday amid fears the building could collapse onto railroad tracks.

Baltimore City fire crews responded to an early morning fire on the 3400 block of Keswick Avenue. The 2-alarm fire is now under control. The fire department says three vacant buildings were involved. There are no reported injuries or displacements.

Subsurface levels were stacked with mattresses, the city's fire chief said, and the blaze had grown to seven alarms by early Tuesday.