A car bomb has exploded near the offices of a Basque television station in Bilbao in northern Spain.
The bast occured an hour after an anonymous caller claiming to speak on behalf of Basque terrorist group ETA alerted the Bilbao fire brigade to the device. No casualties have been reported.
Police found a man tied to a tree near Bilbao and suspect his van was used for the attack, a spokesman said.
On Dec. 30, 2006, a truck bomb exploded at Madrid's Barajas airport, killing two people. That explosion marked the end of peace talks between Spanish Prime Minister Jose Luis Rodriguez Zapatero and the Basque terrorist group. ETA has killed more than 800 people since 1968 in a campaign for an independent Basque nation.
A 71-year- old construction company executive was shot dead in the Spanish Basque town of Azpeitia earlier this month in an attack authorities blamed on ETA.