TAMPA, Fla. -

Hillsborough County deputies fear that a 16-year-old last seen Wednesday afternoon could be with a 41-year-old registered sex offender.

The Florida Department of Law Enforcement issued a statewide missing child alert on Saturday afternoon for Ashley Lyon, who has not been seen or heard from since leaving her Valrico home.  Lyon has been diagnosed as bipolar and did not take her medications with her.

Deputies say Lyon may be in the company of Steven Patrick Myers, who the sex offender registry indicates moved to Plant City after two convictions on sex charges in Georgia.

Lyon was last seen wearing black tank top, black gym shorts, black Vans shoes, and may be in a 1989 Ford Ranger pickup truck with flames painted on the front and sides. The pickup should have a Florida license tag CSJM45.

Anyone with any information regarding the whereabouts of Ashley Lyon is asked to call the Hillsborough County Sheriff's Office at 813-247-8200, Crimestoppers at 1-800-873-TIPS or the FDLE Missing Endangered Persons Information Clearinghouse at 888-FL-MISSING.