A train carrying about 50 people has derailed in Portugal, leaving several passengers injured and others trapped, emergency services say.

The train came off the tracks in the Carrazeda de Ansiaes region in the north-east of the country.

One unconfirmed report said there was an explosion before the accident.

Several people were taken to hospital. At least one person was reported to be in serious condition, while others were still trapped in the stricken train.

              
 

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