Received the same call with the exact same message.  Did not call number back, cause God only know if they can hack your internet like that, not computer savvy,but surely not taking any chances.  At least not the only one.  Wish everyone luck and just don't call that number back.

Same, here (in California).  Call came in at 3:25 pm today (Thursday, 6-9-2016).  "Kevin Mason..."
Area code (281) is from the Baytown/Houston/Missouri City, Texas area.
I've received about 7 or 8 of these calls, in the past couple of years, from all different phone numbers in all different states:  NJ, AZ, District of Columbia, etc.  I even reported them to the FCC  (tom.wheeler@fcc.gov).  I suggest we all report these callers, every time we receive one of their crank calls.  Perhaps, then, someone with the Government will do something about it.

June 13, 2016 at 3:31 received the same call from 281-990-6005, British accent with same message.  He stated that he was with the U. S. Treasury Enforcement and that they were in charge of warrants for IRS.  Stated that I was guilty of tax evasion.

Foreigner, not British & didn't leave a name, left a message trying to bully me & that I was in trouble. Bunch of BS, can't even speak english.

Got the same message as everyone else! Kevin Mason, US Treasury, federal action, ignoring is a big mistake, Call him back