Details of Gabby Petito's Utah fight with fiancé Brian Laundrie revealed in witness statement to police

FIRST ON FOX: The 911 caller who reported the domestic incident between Gabby Petito and Brian Laundrie in Moab, Utah, believed that the couple was fighting over a phone and that Laundrie may have been trying to ditch his fiancée, according to a witness statement obtained by Fox News.