Israeli authorities have confirmed the death of Shani Louk, a 23-year-old Israeli-German woman who was taken by Hamas militants during an attack on the Supernova music festival on Oct. 7.

According to the BBC, Louk’s death was confirmed after investigators matched her DNA with a sample taken from a skull bone fragment. It’s not yet clear where or when the skull fragment was found. Louk’s body also hasn’t been located yet.

As such, an exact cause of death hasn’t been officially determined. Speaking with the German TV news channel RTL/ntv, Louk’s mother, Ricarda, said she believed her daughter may have been shot in the head during the attack. “At least she didn’t suffer,” Ricarda said.

On Twitter, the Israel Foreign Ministry said, “We are devastated to share that the death of 23 year old German-Israeli Shani Luk was confirmed. Shani who was kidnapped from a music festival and tortured and paraded around Gaza by Hamas terrorists, experienced unfathomable horrors. Our hearts are broken. May her memory be a blessing.”