This number called me several times.  Finally left a message that they were from the US Treasury and that if I didn't call back I would be arrest and taken in front of a magistrate judge or grand jury.  I called back and asked for a file number as I would have to have my attorney call since there was a threat of me being arrested.  She said that the agents would be at my house in 45 minutes to arrest me and hung up.  I am still waiting!

Answered and was told it was the treasury calling who wanted to help me. At this point I hung up as it was an obvious scam.

a threat call warning of federal action if i ignored his call.  In a foreign (indian?)  accent.

Yes, I got the same warning in my answer machine and an indian accent

Caller I.D. - "Forks WA" no message left.