The Beirut Fire Brigade declared on Wednesday that it tasked two expert officers to investigate the cause of the fire that devastated Pizza Secrets restaurant in Beirut a day earlier, in which nine people died.

The officers “will be inspecting the scene and collecting evidence to reveal the causes of the fire, upon the orders of Beirut Governor, Judge Marwan Abboud,” the Brigade said in a statement, adding, “After finishing their work, they will write down a report and submit it to the competent authorities.”

“The Beirut Fire Brigade draws attention to the fact that its work is professional and based on science and evidence, not speculation,” the statement continued, noting that the Brigade’s public statements are stricly issued by Regiment Commander, Brigadier General Maher Al Ajouz, or the head of Public Relations Division, Captain Ali Najem, otherwise they should be treated as inaccurate.

Earlier on Wednesday, Al-Akhbar newspaper quoted “Beirut Fire Brigade sources,” claiming that the reason behind the fire at Pizza Secrets restaurant was workers welding gas pipes.