Four suspected members of the armed Basque separatist group ETA were arrested early Saturday in southern France, Spanish officials said.
The three men and one woman were arrested in Cahors, a town near Toulouse, the Interior Ministry said.
The joint French-Spanish raid took place a week after a van packed with an estimated 80-100 kilograms (175-220 pounds) of explosives blew up in Spain's northern Basque region outside a police station, destroying cars, shattering windows and slightly injuring two policemen.
Authorities said it was ETA's first serious attack since it called off a cease-fire in June.
