LONDON — Ten people were stabbed on a train that connects London to North East England on Saturday night, authorities said.

Nine suffered life-threatening injuries while a 10th victim was being treated for non-life-threatening injuries, British Transport Police said in a statement early Sunday.

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"There have been no fatalities," the agency said.

U.K.'s Counter Terrorism Policing, an agency that includes participation from the 43 police forces of England and Wales as well as contributions from police in Scotland and Northern Ireland, is assisting with the investigation led by transport police, it said.

Transport police said it hopes to discover the "full circumstances and motivation" for the attack. "This has been d

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