Jan. 19 (UPI) -- The death toll from Sunday's train derailment and collision in southern Spain rose to 40 on Monday, as investigations continued probing the cause of the incident, and dozens of injured remained hospitalized.

The incident occurred Sunday night in the southern Spanish town of Adamuz, located in Cordoba province about 230 miles southwest of the capital Madrid.

Officials said a train operated by private company Iryo was traveling from Malaga on Spain's southern coast to Madrid with about 300 people on board when it derailed at about 7:45 p.m. local time Sunday, jumping onto adjacent tracks.

The derailed cars collided with a second train operated by state-run Renfe that was traveling in the opposite direction from Madrid to Huelva, forcing it off the tracks and sending its two front cars down a 13-foot embankment.

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