I too received that e mail stating that i have 48 hrs to reapond. It had a pdf with a warrant with charges as mentioned. Funny thing is my brother is a cop. I sent this to him and he sent it to a friend who is lawyer and they said ignore "SCAM" HE IS CONTACTING THE FEDS.
Got a email very similar and also had a warrant for my arrest attached to it. Glad I googled this guy and number. I thought someone took out a loan in my name!