A suspect was detained Monday following a security scare that led to the evacuation of European Parliament buildings in Brussels. The country has been on high alert since mid-January, when police carried out a series of raids, acting on information that a terrorist cell was on the verge of launching an attack, dpa reported. Two suspects were killed in one raid, in eastern Belgium. On Monday, several of the parliament's administrative offices and its visitor centre were evacuated after a suspicious vehicle was found parked nearby. The main building was unaffected, parliament spokeswoman Marjory van den Broeke told dpa. The police later apprehended a suspect dressed in military uniform and behaving in a conspicuous manner, the Brussels prosecution services said according to Belga. The man had a vehicle key on him. Police and military explosives experts searched the suspicious vehicle, but no explosives were found, Belga wrote. The security perimeter was lifted and people were allowed back into the buildings.