Prosecutors Mulling Over Erin Andrews Case

The U.S. Attorney is now deciding whether to charge the man who threatened Erin Andrews with violent emails with making criminal threats.

TMZ broke the story ... a man in Newport News, Virginia sent a series of threatening/violent emails last March to "The Dan Patrick Show," directed at the ESPN star. Among them:

- "I hope she gets shot in the face. I would love to see if she can dance away from a hail of gunfire. That would really make my day."

- "I'm one in a million. She'll never see me coming."

- "Somebody should shoot her in the face."

Sources tell us the FBI went to the suspect's house and spoke with his dad, who explained his son -- who is in his 30's -- had serious health and mental issues. Sources tell us the suspect had a stroke earlier in his life.

We're told the FBI forwarded the case to the U.S. Attorney 2 weeks ago for review, but so far no decision has been made.

One source close to the investigation tells us ... given the man's mental status, it's "doubtful" criminal charges will be filed.