Seacrest Alleged Stalker Has Been on Ryan Hunt

Ryan Seacrest's alleged stalker showed up at a radio station earlier this month, looking for Ryan ... and Ryan's people have been asking prosecutors for weeks to take swift action against the guy.

TMZ has learned earlier this month Chidi Uzomah showed up at KIIS FM in Burbank, CA, looking for Ryan. Uzomah apparently didn't know that Ryan did his radio show out of the E! offices in L.A. The Burbank police were called but no arrest was made.

Law enforcement sources say Ryan's people began calling the Orange County D.A.'s office immediately after the KIIS incident, asking prosecutors to violate Uzomah's probation and put in place a criminal protective order. Uzomah was on probation after attacking Ryan's security guard last month in the O.C. One condition of probation -- stay away from Ryan Seacrest.

We're told Ryan and his people fear Uzomah poses a danger to the host and want him locked up. The O.C. D.A.'s office tells us they are reviewing the incident and have been in contact with law enforcement agencies from both incidents.

As for today's incident -- where Uzomah showed up at E! when Ryan was there -- not so complicated.