restricted airspace, according to the Capitol Police.

At around 1:30 p.m., the Capitol Police observed an aircraft enter restricted airspace heading toward the Capitol, police spokeswoman Sgt. Kimberly Schneider said in a statement. The perceived threat caused the police to evacuate the Capitol complex.

“Once it was determined that the threat had dissipated, and communication was established with the pilot who landed the aircraft safely at Reagan National Airport, the U.S. Capitol Police resumed normal operating procedures,” Schneider said.

The Capitol complex was reopened around 2 p.m.

The Capitol Police and the Transportation Safety Administration are investigating.