MONTGOMERY COUNTY, Texas -

Investigators are searching for a man suspected of sexually assaulting a 6-year-old autistic girl.

Montgomery County sheriff's deputies said the girl was raped in June 2012.

A warrant was issued for the arrest of Justen Levi Burns. He fled the state after that warrant was issued, investigators said.

Detectives said they tracked Burns to the Colorado Springs area. Authorities in Colorado tried to arrest Burns, but he left the state with Sarah Peterson, officials said. Investigators have not said what type of relationship Burns and Peterson have.

Burns' immediate family members live in Conroe, so investigators suspect he may head there, with or without Peterson.

Anyone with information regarding Burns' whereabouts is asked to call Montgomery County Crime Stoppers at 800-392-7867.