Spanish police say a small bomb exploded outside the home of a businessman in the Basque region but no one was injured.
An official with the Basque regional police says the blast caused damage outside the house in the town of Amorebieta and the attack looked to be the work of the Basque separatist group Eta.
The official said the device was small and went off today around 1am local time, with no prior warning call. There was no immediate claim of responsibility.
Eta declared a ceasefire in March 2006 but resumed violence within a matter of months after peace talks with the government went nowhere. It has killed more than 825 people since the late 1960s.