I got 3 messages from this number yesterday claiming to be from the Tresury Inspector's Department Tax Admin claiming that a warrant had been issued for my name and address. However red flag #1 was that in one of the messages the guy at first said he was Mickel Delgado and towards the end of the message he said his name is Brian Allen. These guys obviously lie so much they can't remember what name they use. So I got one line to research the phone number only to find my "case id" or "warrant id" number CM100144, posted about by someone else - red flag #2. This is obviously a scam. The other names they used were Jim Marshall and Jay Evonic.
I just received a phone call today on memorial day, which is a holiday. The number was 202-239-2603. The caller had an Indian accent and seemed professional. He claimed he is from the Internal Revenue Service (IRS). He asked me to pay $1,200 for mistake in my 2011 and 2012 taxes or the police will show up on my door step within two hours. The caller knew my name and address. He also provided me with a case number. Things seemed to be legit and I fell for it until he asked me to pay over the phone immediately. I asked him to mail me some kind of documentations to prove his claims. He refused and demanded me to pay. This is a scam people. Do not provide them with any personal information!