Four people were arrested outside of Sen. Charles SchumerCharles (Chuck) Ellis SchumerJuan Williams: The politics of impeachment Texas Republicans slam White House over disaster relief request Dem rep: Trump disaster aid request is 'how you let America down again' MORE’s (D-N.Y.) office Monday for “crowding, obstructing, and incommoding” during a demonstration against U.S. drone policy, according to U.S. Capitol Police (USCP).

They were arrested just after 2:30 p.m. outside of Schumer’s office in the Senate Hart Office building. They were later processed at USCP headquarters, the agency told The Hill Monday afternoon.

Anti-war activist David Swanson had tweeted around that time about a demonstration at Schumer’s office. 

“There are 26 people sitting in Senator Schumer’s office and refusing to leave until he opposes #drone murders,” Swanson said.

Several people were arrested, he tweeted.

Since President Obama took office, the administration has expanded the government’s lethal drone program abroad in an effort to kill wanted terrorists.

Soon after the report of the protest surfaced, Michael Scotto, Capitol Hill reporter for NY1/YNN News, tweeted “This ‘protest’ at Schumer’s office appears to be long over and perhaps overblown.”

Schumer’s office declined to comment on the matter, and referred questions to USCP.