Sinkhole swallows part of bus in US city

The front of a bus is up in the air after a sinkhole opened under it during rush hour in the US city of Pittsburgh.

The Port Authority of Allegheny County says the lone passenger on board is being treated for minor injuries.

The agency tweeted the bus was at a red light when the street gave way and the rear half plunged into the hole.

A photo shows the front of the bus pitched into the air and the front wheels of a car that was behind it dangling over the sinkhole's edge.

Officials are waiting for a tow truck to remove the bus.