Logan Mott of Neptune Beach, Florida, was held in Buffalo after he drove on to a bridge leading to Canada and then apparently turned back toward the USA side, where he encountered border agents, officials said.
Police have been searching for 15-year-old Logan Mott and his 53-year-old grandmother, Kristina French, for the past three days.
The grave was located at Eric Mott's home in Neptune Beach, -where Logan also lives, according to ABC News. "They appear consistent with the description of Kristina French, but there will be no positive identification until the autopsy is completed by the medical examiner", says JSO's Director of Investigations, Ron Lendvay.
Pictured, Logan Mott, Neptune Beach, Florida teen and his grandmother, Kristina French.
Wanted posters for the teenager branded him "armed and dangerous". French's home in the Mayport area also was ransacked. Mott's guns were reported missing from a gun safe.
Authorities believe he will be in a silver 2015 Dodge Dart with a Florida license plate reading DLL-T42.
The Florida Department of Law Enforcement has cancelled the Missing Child Alert for Logan Mott.More news: The explosion at a mosque in Nigeria killed 30 people
"We just ask for everyone to give us time to sort out what happened", Campbell-Mott said.
"No matter what, Logan is our child and we love him and are standing by him to help in any way", she said.
The same plea from Logan's mother, who is asking for time to learn what happened. "Mom", Campbell-Mott said in the post.
In a statement, the May Institute, a nonprofit organization that employed French, said it was "truly devastated" to learn of her death. It is a very sad day.
She the station that the last time she spoke to her son was Sunday night, and everything seemed fine.