URDA, Spain — At least 68 people died when two Spanish high-speed trains collided on Wednesday, with rescuers scouring the wreckage for more bodies after Spain's second deadly rail accident this year and Europe's deadliest since 2013. Spain's transport minister said Wednesday's crash south of Madrid occurred after a Renfe train was authorised to continue its journey despite there being an active red signal because of a stationary train on the track ahead. Oscar Puente told reporters in Madrid that the red signal was issued due to a computer communications failure, which automatically stopped traffic, and an erroneous decision had been made to restart the Renfe train, in a breach of protocol. Ambulances, funeral home vans and helicopters were parked next to one of the trains on an elevated section of track, while twisted metal, broken panels and wreckage were strewn across an embankment down which at least three carriages had plunged. Rescuers looking for more victims Evacuated passengers streamed along a nearby road. Some were splattered with blood or had bandaged wounds, while others w