Spanish officials and investigators gather in front of police barracks in the northern city of Burgos on Wednesday after the 4 a.m. explosion of a car bomb. The bomb injured around 60 people in an attack authorities blamed on the Basque separatist group ETA. (Cesar Manso / AFP/Getty Images)
Investigators collect evidence in front of police barracks in Burgos, Spain, on Wednesday after a car bomb exploded. No one was reported killed, but an estimated 60 people were injured and the structural damage was extensive. (Cesar Manso / AFP/Getty Images)
Forensic experts collect evidence next to a crater following the explosion of a car bomb outside a 14-story police station that included living quarters for officers’ families, in Burgos, Spain. (Santi Otero / EPA)
