Brian Laundrie's Family Changes Story

(North Port, FL) -- The family of a Florida man wanted in connection with his fiance's death is changing their story.  

Brian Laundrie's parents now say he left their home to go hiking on September 13th, one day earlier than what they told investigators. That was two weeks after he returned from a cross country road trip without Gabby Petito.  

Her body was found in Wyoming, where the couple had stopped. Laundrie's sister is pleading with him to come forward.