Israel’s top security official said an investigation into the murder of a 19-year-old woman, thought to be a nationalistically motivated attack, had yielded a dramatic development Monday.

Public Security Minister Yitzhak Aharonovitch vowed during a condolence visit to the woman’s family Monday afternoon that the perpetrators of the murder would be found soon.

The battered body of Shelly Dadon was found last Thursday night in an abandoned parking lot in Migdal Ha’emek, a city a few miles north of Dadon’s hometown of Afula.

The investigation of her murder, which police and Shin Bet sources have suggested may have been a nationalistically motivated terror attack, is under a gag order.

While he couldn’t offer details due to the gag order, Aharonovitch said he believed the investigation was on the verge of dramatic developments.

“The investigation has made very great strides, which can only be described as dramatic,” Aharonovitch told the Dadon family. “The murderers will be arrested soon and will pay the price,” he vowed, calling the killing “one of the most despicable acts.”

Economy Minister Naftali Bennett also visited the Dadon family on Monday, which was also Israel’s memorial day for fallen soldiers and victims of terror.

Dadon was the daughter of the entire people of Israel, he said, and railed against the government’s release of convicted terrorists earlier this year in the framework of US-brokered peace talks.

Dadon’s father told reporters on Monday that Prime Minister Benjamin Netanyahu had spoken to him by phone to update him on the investigation.

Dadon was laid to rest Saturday night in a cemetery in her native Afula. Some attendees, believing that the murder was a terror attack, shouted “revenge” at the funeral.

Matan Maimon, Dadon’s boyfriend, offered similar sentiments at the funeral. “People of Israel, wake up,” he said over Dadon’s grave. “They’re killing us everywhere. We can’t be silent. We protected her 19 years. She walked alone just one single day. All the government ministers are asleep, the whole country is asleep. Nobody is doing anything.”