U.S. lobbying probes persist though Mueller investigation over

FILE PHOTO: Attorney Greg Craig speaks to reporters in Washington, U.S., June 1, 2000. REUTERS/Brendan McDermid

WASHINGTON (Reuters) - Special Counsel Robert Mueller's probe of Russian interference in U.S. politics is over, but prosecutors are investigating two prominent Washington lobbyists for their work for the former pro-Russian government of Ukraine, according to three sources close to the probe.

In a sign that evidence from Mueller's 22-month investigation may yet ensnare more prominent Washington figures, federal prosecutors in Washington cited a former U.S. congressman "working for the government of Ukraine" in charges filed Thursday against former Obama administration official Greg Craig.