LOUISVILLE, KY. (WDRB) -- The stepfather of a murdered Louisville teen pleads guilty to a firearms charge.

Joshua Gouker prompted an Amber Alert when he took his 15-year-old son Joshua Young to Alabama last week. Both were arrested on a firearms charge after a woman was kidnapped there. Young was taken to a juvenile detention center near Birmingham.

Now Gouker will be taken to Madison, Ala. to face kidnapping charges.

Gouker's stepson Trey Zwicker was found murdered behind Liberty High School last month. Zwicker's mother claims Gouker is a suspect, but police say they have none.