Sarraf appeared voluntarily before Judge Tareq Bitar, investigating the blast, to whom he confirmed his willingness to continue helping in the process.
The families of the victims and survivors of the blast blame the ruling elite for allowing the bad storage for years of 3,750 tons of ammonium nitrate, the cause of the disaster.
The explosion killed about 200 people, injured more than 6,000 and destroyed the homes of about 300,000.
Early 2021, Judge Fadi Sawwan, who charged and summoned interim Prime Minister Hassan Diab and three other former ministers, was removed from the process on suspicion of negligence.
Two of the former ministers challenged him, with the pretext that he violated legal and constitutional procedures, and demanded his removal, and they succeeded when he was replaced by Tareq Bitar.
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