Frustrated and mourning demonstrators have loudly read the names of at least 171 people who died as a result of the August 4 explosion in Beirut and demanded the resignation of the President of Lebanon and other officials whom they blame for the tragedy.

The demonstrators had brought with them photos of the victims and showed scenes of the mushroom-like cloud that rose over the city after the blast that left nearly 6,000 injured and hundreds of thousands of people homeless.

“He knew” — this was written under the photo of President Michel Aoun. “The government is resigning, a government is coming, we will continue until the President and parliamentary speaker resign,” the demonstrators said.

As reported Reuters, citing its sources, in July, the President and Prime Minister had been warned about ammonium nitrate being kept in one of the storages of the harbor in Beirut. Aoun, who has promised to conduct a speedy and transparent investigation, tweeted the following today: “I promise all Lebanese that I won’t rest until all the facts are known.”