Gypsy Rose Blanchard's Former Fiancé: Foul Play Not Yet Ruled Out In Ken Urker's Death

Gypsy Rose Blanchard's ex-fiancé Ken Urker's death is under investigation by police in Louisiana ... and TMZ has learned that foul play has NOT been ruled out yet. Captain Brennan Matherne of the Lafourche Parish Sheriff's Office tells TMZ ... as . . .