Four people were arrested outside of Sen. Chuck SchumerCharles SchumerOvernight Finance: Dems introduce minimum wage bill | Sanders clashes with Trump budget chief | Border tax proposal at death's door Sanders, Democrats introduce minimum wage bill Top House, Senate Dems ask Interior not to eliminate national monuments 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.