US, Jan. 19 -- Spanish authorities have launched an urgent investigation into a deadly high-speed rail accident that unfolded late Sunday near the town of Adamuz, in the southern province of Cordoba, raising fresh questions about rail safety on one of Europe's most advanced train networks.

The crash involved an Iryo high-speed service traveling from Malaga to Madrid and a Renfe Alvia train en route from Madrid to Huelva. Initial reports confirm dozens of fatalities and more than one hundred injuries, making it one of Spain's most serious rail disasters in recent years.

What Happened According to early findings, the Iryo train derailed on a straight section of track shortly before 8:00 p.m. local time. Several rear carriages reportedly v...