The Latest on the train crash in Italy (all times local):

1 p.m.

Firefighters in southern Italy say at least a dozen people have been killed when two trains collided head-on in Puglia.

Italian news reports say that two trains collided head-on. The trains, each with four cars, collided near the town of Andria on a line with just a single track, according to news agency ANSA and Sky TG24.

A photo of the crash showed cars crumpled together and forced off the tracks at sharp angles. News reports said rescue workers were pulling victims from the rubble, including a small child who was alive. Video images showed ambulances responding to the scene with other rescue workers.

National police and Carabinieri couldn't immediately give details about the extent of the crash, saying they were in the middle of responding.

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12:50 p.m.

Italy's prime minister says the train crash "is a moment of tears" and has pledged not to stop until a cause is determined.

Matteo Renzi was speaking in Milan after the head-on collision in the southern region of Puglia on Tuesday morning. At least a dozen people were killed and dozens of others injured.

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12:45 p.m.

Italian news reports say that two trains have collided head-on in the southern region of Puglia, killing at least four people and injuring dozens of others.

The trains collided near the town of Andria, according to news agency ANSA and Sky TG24.

ANSA reported that at least four people had died, while Sky TG24 reported 10 dead.

National police and Carabinieri couldn't immediately give details about the extent of the crash, saying they were in the middle of responding.

ANSA said ambulances and fire trucks were reaching the scene.