'How could you do this to Gabby?' Petito family lashes out against Brian Laundrie

The family of a woman from Long Island who has been missing for several weeks has issued a new statement lashing out at her boyfriend.

Gabrielle Petito was on a cross-country trip with Brian Laundrie. She has not been heard from since August. Laundrie returned home to his parents' Florida home and has not helped investigators in the case.

On Wednesday, Gabby's extended family said: "Everyday the search for Gabby continues the Schmidt and Petito family becomes more desperate. They are frantically searching for answers and information in their daughter’s disappearance while Brian sits in the comfort of his home."

Get breaking news alerts in the free FOX5NY News app!  |  Sign up for FOX 5 email newsletters

It went on to state: "Brian claims he wants to sit in the background while we search for Gabby in the wilderness of the Grand Teton and Yellowstone national parks. Brian left Gabby in the wilderness with grizzly bears and wolves while he sits in the comfort of his home. In his home!"

It asks him:  "Brian, how could you do this to Gabby? You selfishly remain silent while Gabby is all alone in the wilderness. Brian, your silence is reprehensible! We beg you to do the right thing and help us bing [sic] Gabby home."

It ends with: "Brian, whatever happened in Wyoming, happened. The only thing you can control is what you do now. Tell us where Gabby is. You tarnish your love for her with your silence."

Police have named Laundrie a ‘person of interest’ in her disappearance.

RELATED COVERAGE

Boyfriend now ‘person of interest’ in case

Long Island woman goes missing during road trip with boyfriend

Gabby Petito case: Boyfriend's family issues statement through lawyer

Report: UT police called to 'incident' 2 weeks before missing report

gabby-boyfriend

Boyfriend 'refusing to tell Gabby's family where he last saw her'

Van found at boyfriend's Florida family home

Missing woman's haunting songs on Spotify account may provide answers

READ IT:  Police report from disturbance involving Gabby Petito, Brian Laundrie