A bomb exploded on Saturday outside a court in the town of Tolosa in Spain's northeastern Basque region following a warning call from the armed Basque separatist group ETA, public television TVE reported.

The bomb went off at 1.15am (11.15pm GMT on Friday), the television station said.

There were no reports of any injuries.

Police had cordoned off the area, the Europa Press news agency reported.

The bomb went off about half an hour after the phone call by from a man in the name of ETA to regional traffic department DYA warning of imminent blasts.

ETA, which is blamed for the deaths of over 820 people in its 40-year campaigns of bombings and shootings for an independent Basque homeland, traditionally calls the DYA to warn of its attacks.

Its last victim was a soldier who was killed when a car bomb exploded outside a military school in the northern autonomous Cantabria region on 22 September.

The attack was one of three in northern Spain over that weekend blamed on ETA and in which 11 people were also wounded.

AFP