A cargo train derailed in Pittsburgh Thursday morning.

Photographs showed train cars tipped over on their sides. No injuries were reported, according to the Pittsburgh Tribune-Review.

Updated: Cargo train derails in Pittsburgh's Hazelwood section http://t.co/HOAxhlfRKY pic.twitter.com/sobGDSWy5L

— TribLIVE.com (@TribLIVE) May 14, 2015

#BREAKING: Train derailment in Hazelwood. 10 non-passenger cars. Injuries unknown. pic.twitter.com/zEHlAIdTjn

— WTAE-TV Pittsburgh (@WTAE) May 14, 2015

More: Freight train derails in Hazelwood http://t.co/yvXXuru8ix pic.twitter.com/iKHkNKJFV6

— Pittsburgh PG (@PittsburghPG) May 14, 2015

It wasn't immediately clear what the train was carrying, although the Tribune-Review reported there did not appear to be signs of any hazardous materials spilled.

Allegheny Valley Railroad confirmed to the Pittsburgh Post-Gazette that it owns the freight-liner train but didn't provide any details.

The derailment comes just two days after an Amtrak passenger train went off the rails, killing seven people and injuring more than 200.

This is a breaking news story. Check back for updates.

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