Washington, August 3: Authorities issued a shelter-in-place order and searched Senate office buildings near the US Capitol Wednesday afternoon after a 911 call warned of a possible active shooter. But a floor-by-floor search of the three buildings found nothing, and Capitol Police Chief Tom Manger said the cause of the security scramble "may have been a bogus call".

"We found nothing concerning," he said. "We got nobody who actually heard shots and certainly no victims." The incident comes amid heightened security concerns created by former President Donald Trump's indictment on charges relating to his attempts to overturn the results of the 2020 presidential election. Trump is due in federal court Thursday just a few blocks from the Capitol. MSU Police Reported a 2nd Shooting with Possible Injuries at a Gym Near the University.

Manger said Washington's multiple law enforcement agencies had been planning "for a couple weeks now" for a possible indictment and had "a security plan in place" in case Trump supporters attempt to disrupt the legal proceedings. The lockdown started when local police received a call around 2:30 Wednesday afternoon, warning of a "heavyset Hispanic male wearing body armour" inside the Hart Senate Office Building, one of the three structures near the Capitol housing offices for senators and their staffs.

Capitol Police began a search, going floor by floor through the massive buildings.

Capitol Police Search Senate Office Buildings After Report of Active Shooter

Inside the Russell Senate Office Building, officers evacuated the hallways and shouted at people to run outside and away from the building. Outside, tourists watched as dozens of police cars surrounded the area. Staff and journalists working in the building received an email instructing them to take shelter in a locked room, remain quiet and silence all electronics. False Alarm at Savannah High School in Georgia. No Evidence Was Found. 

Manger said about 90 minutes later that all three Senate office buildings had been cleared and the call appeared to have been false. The House of Representatives and the Senate are currently on recess and the office buildings are generally less crowded than usual.

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