Firefighters in Philadelphia have been battling a 5-alarm fire at a warehouse reportedly full of vehicles and tires.

The fire crews in the Tacony neighborhood are asking the public to avoid the area to ease access for all emergency vehicles and other responders.

Philadelphia's Office of Emergency Management says residents can expect road closures and delays and warn if they smell smoke in the area, it's important to keep the windows closed.

The cause of the fire has not yet been determined.