>> kwame kilpatrick, former mayor of detroit, serving a 20-year sentence for racketeering and bribe-takinge a letter accusing governor snyder of covering up this water crisis, saying there was acknowledgement of it going back to 2004 and says that the governor has been viciously untruthful. very unclear if there's any substance to that allegation. 2004 is very early. you recall residents didn't begin complaining about the water until april of 2014. so, a vast discrepancy there. but interesting commentary that we'll certainly follow up on, kate. >> and have we been able to verify independently the authenticity of that letter? >> reporter: no, not yet. it's been reported widely, it hasn't been confirmed as a fake, but we're working to verify it and follow up on the allegations. if true, kwame would have been in a position to know something, and what he found out could be pivotal. >> sure. very interesting. tony decoppell, thanks so much for all of your coverage. rachel maddow is heading back to flint this week to host a town hall on the water crisis. that's this wednesday at 9:00 eastern, on