Egyptian authorities have referred dozens of people to trial over the last year’s assassination of the country’s top prosecutor.

Prosecutor General Nabil Sadek sent 67 people to the criminal court on Sunday, without mentioning the exact date of the trial.

Sadek said in a statement that all the defendants were members of the outlawed Muslim Brotherhood movement, who “conspired” with members of the Palestinian resistance movement Hamas to assassinate Public Prosecutor Hisham Barakat in a bomb attack in the Cairo suburb of Heliopolis in late June 2015.

In March, Egyptian Interior Minister Magdy Abdel Ghaffar told a news conference in Cairo that both Muslim Brotherhood and Gaza-based Hamas were involved in the assassination.

The Hamas, however, has strongly rejected the allegation, calling it as “baseless.”

“Hamas calls on all parties in Egypt not to involve Palestinian factions in their internal differences,” Hamas spokesman Sami Abu Zuhri said in a press release on March 7, hours after Ghaffar’s comments.

There have been no credible claims of responsibility for the bombing that killed the 64-year-old state prosecutor just outside his house on June 29.