( CNN ) -- A Belgian military bomb squad investigated a suspicious vehicle outside the United States Embassy in Brussels , Belgium , on Wednesday , but found `` nothing abnormal , '' officials said . The building was `` evacuated this afternoon as a precaution while Belgian authorities investigated a suspicious vehicle in the vicinity , '' the embassy said on Twitter . The incident began when a police officer noticed that the car did not have the official plate required for parking by the diplomatic mission . The officer checked and found something suspicious in the car , Brussels police spokeswoman Ilse Van de Keere said . She refused to say what prompted the officer 's concern . Police later said they saw wires coming from the car , but there was `` nothing abnormal to report . '' Technicians are continuing to investigate the vehicle , and police are trying to determine who owns it and how it came to be parked near the embassy , they said . The incident came just over a month after a fake bomb attached to a vehicle as part of a terrorism drill by the U.S. Embassy in Oslo , Norway , triggered a security alert at that embassy . The U.S. Embassy had a rehearsal for a terrorism incident in mid-July , spokeswoman Siv Alsen of Norway 's Police Security Service said . They `` used fake bombs , and one of those bombs was not removed '' from the vehicle it was attached to , sparking the July 31 alert , Alsen said . CNN 's Alanne Orjoux , Andrew Carey and Jo Shelley contributed to this report .
A suspicious car prompted the Belgian Foreign Ministry to deploy a bomb squad . The car has no explosives but police are investigating how it got there . The alert followed a scare at the U.S. embassy in Norway a month ago .