Georgia officials requested more testing on Sunday in the case of twin brothers who were found dead together in the mountains earlier this month.

Hikers discovered Qaadir and Naazir Lewis, 19, deceased at the top of Bell Mountain on March 8. The pair had gunshot wounds, and a preliminary investigation by Towns County police suggested it was a murder-suicide, according to WAGA.

However, on Sunday, the Georgia Bureau of Investigation said the Lewis brothers’ cause of death is pending as it seeks more forensic testing. WSB-TV reported that the agency received the brothers’ bodies from local authorities to perform their autopsies.

“I can’t imagine them hurting each other because I’ve never even seen them get into a fistfight before,” their uncle told the news outlet. “Murder-suicide? I just believe that they were extremely incapable of that.”

The brothers were expected to go to Boston, Massachusetts, on March 7 but never made their flight. WAGA reported that their airline tickets were in their wallets when their bodies were found the next day.

Their family said the twins had never been in the area, which is 90 miles from home.

The investigation remains ongoing.

“How did they end up out in the mountains? They don’t hike out there, they’ve never been out there,” their aunt told WJCL. “They don’t know nothing about Hiwassee, Georgia, they never even heard of Bell Mountains — so how did they end up right there.”

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