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Will Hayden has been arrested again -- this time cops are adding a charge of child rape in the molestation case he's already facing ... TMZ has learned.
TMZ broke the story ... the "Sons of Guns" cast member was busted 2 weeks ago in Louisiana for allegedly molesting his 12-year-old daughter. Hayden was released after posting bail -- but we've learned he was picked up again today.
Law enforcement sources tell us the investigation led the East Baton Rouge Sheriff's Department to tack on a charge of aggravated rape of a child. An arrest warrant was issued today ... and cops, aided by U.S. Marshals, nabbed Hayden in Livingston, LA.
Hayden told us after the initial arrest that his ex-girlfriend -- and mother of the child -- was making false allegations to get back at him for ending their relationship.
