Authorities said the evacuation took place at 10:20 a.m. local time.
Spanish police reported on 16 September that they had evacuated a central part of the northern city of Oviedo in the morning in response to a bomb threat.
"We received an anonymous bomb threat by telephone and, following protocols, we proceeded to evacuate part of the area", a spokesman for the national police said, as cited by Reuters.
Police later specified that the purported explosive device was reported to have been identified in a parking space. Officers are now searching for the object.