Suspicious letters to members of Congress

Roll Call -  A wave of suspicious letters mailed to members of Congress is likely to continue, House officials warned Monday, describing a white powder in the envelopes.

So far, “none of the letters received by Congressional offices have been determined to contain hazardous substances,” according to a memo sent to members and staff and obtained by CQ Roll Call.

But more offices may receive similar letters “in the coming days,” House Sergeant at Arms William McFarland wrote in the memo.

At least a few dozen House Democrats have already spoken out about receiving suspicious mailings, according to a review of social media posts and statements from lawmakers.

On Monday morning, Rep. Suhas Subramanyam, D-Va., said his district office in Leesburg was evacuated after receiving a suspicious envelope. “These acts of political intimidation have no place in our country,” he said in a statement.

The FBI confirmed Thursday it was working alongside the U.S. Postal Inspection Service to investigate “a series of suspicious mailings sent to various addresses nationwide, including Secretary of State offices and their related election offices.”