Police found a bomb on Friday on a high-speed rail line between Madrid and Seville, Interior Minister Angel Acebes said.
Bomb-disposal experts alerted by a railway employee found 10kg to 12kg of explosives, possibly dynamite, under a track about 60km south of Madrid on the route to the southern city of Seville, Acebes said.
The explosives were connected to a detonator with a 130m cable, the minister told a news conference.
He said it was not immediately known who placed the bomb.
”As we get information regarding those possibly responsible or details that move the investigation forward, we will give them to you,” Acebes told reporters.
The discovery of the bomb came less than a month after 10 backpack bombs ripped through four commuter trains in Madrid, killing 191 people and injuring more than 1 800.
On Thursday, police in northern Spain defused three letter bombs addressed to journalists in Madrid. — Sapa-AP