Former FBI agent Stuart Kaplan said DNA that the Teton County Coroner said he handed over to law enforcement could help take the Gabby Petito case one step further.
"This can of course include him (Brian Laundrie) as being the attacker or responsible person for causing Gabby Petito’s death or it could exclude him," said Kaplan.
Wednesday marks one month since his parents say they last saw him leave for a hike at Florida's Carlton Reserve.
While the case is getting some backlash from the public as slow-moving, Kaplan said he thinks otherwise.
"I think they have moved this investigation quite expeditiously," Kaplan said. "Every procedural part of this case could be subject to questioning or challenged in the court of law and law enforcement only has one opportunity to do it right and get it right."
Kaplan said now that Petito’s death has been ruled a homicide and the cause has been determined as strangulation, a suspect may already have been named behind closed doors.
"That piece of information, I would bet, has gone into grand jury - there is now a sealed indictment for the apprehension for the person who is responsible for the death of Gabby Petito," Kaplan said.
Details surrounding possible warrants and charges, however, likely won’t be released until an arrest is made.
"They would tend to not want to unseal that," said Kaplan.
As for where Brian Laundrie may be, in a statement, his family attorney Steven Bertolino wrote: "Chris and Roberta Laundrie do not know where Brian is. As everyone knows, they believe his last location was the reserve."