Called, unknown number

Saging it's a message from the IRS saying there is a case against me and a arrest warrant will be issued

I just got the same message. This is bogus. I have been paying IRS for the taxes I owe from a withdrawal taken on my 401k. This is not IRS. if you look it up online, it is a scam. Lord knows I don't need to pay any more money that I have to pay.