The Supreme Judicial Council is Lebanon’s top judicial body.
A judge on Monday questioned the heads of the country’s security agencies. Public Prosecutor Ghassan El Khoury questioned Maj. Gen. Tony Saliba, the head of State Security, according to state-run National News Agency.
It gave no further details, but other generals are scheduled to be questioned.
State Security had compiled a report about the dangers of storing the material at the port and sent a copy to the offices of the president and prime minister on July 20.
The investigation is focused on how the ammonium nitrate came to be stored at the port and why nothing was done about it.
Najjar, the public works minister, said he learned about the material’s presence 24 hours before the blast, receiving a report about the material and holding a meeting with port officials before calling its chief, Hassan Korayetem.
“I wrote a report in the morning the explosion happened in the evening,” Najjar said. Asked why he only learned of it the day before, Najjar said, “I don’t know. Truly I don’t know.”
About 20 people have been detained after the blast, including the head of Lebanon’s customs department and his predecessor, as well as the head of the port.
Dozens of people have been questioned, including two former Cabinet ministers, according to government officials.
On Sunday, world leaders and international organizations pledged nearly $300 million in emergency humanitarian aid to Beirut, but warned that no money for rebuilding the capital would be made available until Lebanese authorities commit themselves to the political and economic reforms demanded by the people.