Security officers at Boston's federal courthouse forced the evacuation of the building Wednesday afternoon just after 3 p.m.
There is no word on what lead to the evacuation.
Attorney Francis DiMento says he was in a hearing when someone came over the loudspeaker and announced a "code red" and told everyone to get out in a hurry.
According to the Boston Globe, hundreds of people could be seen standing outside the building while Coast Guards and police boats were stationed in the water nearby. The courthouse is where a large group of media had gathered for an expected appearance by the suspect in the Marathon bombings. Investigators have since said they have made "significant progress" in the case, but no arrests have been made.
The courthouse has a day care attached and at least one crib was wheeled out. No additional information is being released.
For a short time Wednesday people were being evacuated from Brigham Hospital, where many of the bombing victims were taken. Officials say the partial evacuation was due to a report of a suspicious car in the area. People were allowed back into the building within 30 minutes of the evacuation.