The White House was placed on lockdown for approximately 30 minutes on Tuesday, as fighters scrambled from a nearby air base to intercept a small aircraft or something that penetrated the restricted airspace around the President’s home. Roads in the area were closed and a number of buildings were evacuated as a precaution.

“Senior officials across the interagency are monitoring the situation on a national event conference call. NORAD aircraft are on site and responding,” Lt. Col. Chris Mitchell, a Pentagon spokesman, said.

According to reports from D.C., the U.S. Capitol Police scrambled at least one helicopter to support air intercept fighters that departed from Joint Base Andrews shortly after 8:30 a.m. Washington D.C. time.

Initial reports indicated that a small aircraft was being tracked moving east into White House’s restricted airspace, but subsequent statements have brought that assertion into question. One official told Fox News that their radar was showing “different sectors” as to where the threat was coming from. Another official said that whatever prompted the lockdown was an “anomaly,” he further guessed that it might have been geese.