* Whoa…

Source says feds showed up this am, asked everyone to leave and put brown paper on the doors. pic.twitter.com/4qJBwzoKF4

I’m outside Ald. Burke’s committee on Finance. Glass doors papered over. Feds appear to be inside. More on NBC5 @11 .

…Adding… Hmm…

Peeking through a crack in the brown paper covering the windows, "There's a guy in there." He's ignoring knocks from reporters. pic.twitter.com/1Mv6iMDAiz

*** UPDATE 1 *** Tribune…

A law enforcement source told the Chicago Tribune that FBI agents raided Burke’s City Hall office and that the search was ongoing. No arrests were made or are imminent, said the source, who had no details on the nature of the investigation.

Burke’s ward office on the Southwest Side also had the same brown paper taped over its front door with three signs that read, “Office closed.” An officer sitting in a squad car parked behind Burke’s ward office said a search warrant was being executed inside but offered no further details. […]

…Adding… Prudent…

Follow-up: Apparently Justice Burke's swearing-in ceremony in the court chambers on the 18th floor of the Bilandic Building were canceled. She was sworn in by Chief Justice Karmeier in her chambers "some time this morning," according to security guards who talked to me.

*** UPDATE 2 *** Greg Hinz…

There was no immediate word on what instigated the raids, but Burke’s influence as chairman of the Finance Committee over the city’s workers’ compensation fund could be a focus. Burke has kept outside oversight of its payouts to a minimum—even outside the purview of the city’s inspector general.

Another area of law-enforcement interest could be reflected by a recent surge in payments to the Internal Revenue Service by one of Burke’s campaign finance committees.

According to filings, Friends of Ed Burke paid nearly $150,000 to the IRS during the three months ended in June. That compared with much more modest sums in earlier periods, including two checks issued for $2,154.80 each and a third for $84 in 2017’s second quarter.

The committee also stepped up its payments to the Illinois Department of Revenue, sending more than $10,000 during the three months ended in June.