A Georgia family is seeking answers amid their grief.

More than one week after the bodies of twins Qaadir Malik Lewis and Naazir Rahim Lewis, both 19, were found by hikers on Bell Mountain in Hiawassee, Ga., authorities have classified the case as a murder-suicide. 

“Both men were found with gunshot wounds,” the Georgia Bureau of Investigation said in a March 9 statement. “The preliminary investigation reveals the deaths to be a murder suicide.”  

However, a week later they noted that the formal cause of death for the twins has not been concluded.

The organization added March 16, “A GBI medical examiner has completed the autopsies, but the official ME ruling and results are pending additional forensic tests.”

Qaadir and Naazir had been scheduled to take a flight to Boston on March 7 to visit friends, but the pair never boarded their flight, according to authorities. The brothers’ bodies were found 90 miles away from their Lawrenceville, Ga., home in an area their family told NBC affiliate WXIA they had never visited with their plane tickets in their wallets.