Brian Laundrie‘s parents, Christopher and Roberta Laundrie, could face jail time if they are charged with being an “accessory” or “obstruction of justice”

following the death of his fiancée, Gabby Petito, Florida-based attorney John M. Phillips exclusively tells In Touch.

Although Phillips is not handling the Petito-Laundrie case, he says it’s important to note that “Brian’s parents don’t have a duty to cooperate [with authorities] but once they do,

they could be charged with obstruction of justice or lying to police if they know about where Brian is or if he told them he killed Gabby, or if they helped him escape.”

On September 21, authorities announced the body found in Grand Teton National Park was identified as missing 22-year-old Petito.

After Brian’s return to Florida, William and Charlene Guthrie, who live in the same neighborhood as the Laundries, claimed they saw the family load up their new camper and leave town for the weekend.

The presumed trip occurred about a week after Brian returned home without Gabby. His parents later returned home with Brian

It’s reported that Brian last told his parents he was going on a hike before his own disappearance, but the Laundries have since amended the date of Brian’s alleged disappearance.