Former American professional cyclist Lance Armstrong rides with Lebanese and foreign cyclists at the site of the August 4 deadly blast in the port of Beirut that killed scores and wounded thousands in Beirut, Lebanon, Sunday, Oct. 4, 2020. Armstrong led the charity bike tour named, "Bike for Beirut," to raise awareness and fund organizations that are helping residents of the Lebanese capital who suffered losses as a result of the massive blast.

Anti-government protesters shout slogans during a protest against the Lebanese President Michel Aoun near the presidential palace, in Baabda east of Beirut, Lebanon, Saturday, Sept. 12, 2020. Lebanese soldiers on Saturday fired rubber bullets and live rounds in the air to disperse hundreds of protesters trying to march to the presidential palace during an anti-government demonstration.

Firefighters work to extinguish a fire at warehouses at the seaport in Beirut, Lebanon, Thursday, Sept. 10. 2020. A huge fire broke out Thursday at the Port of Beirut, triggering panic among residents traumatized by last month's massive explosion that killed and injured thousands of people.

French President Emmanuel Macron issued a stern warning to Lebanon's political class, urging them to commit to serious reforms within few months or risk punitive action including sanctions, if they fail to deliver.

Lebanese officials have now said that the August 4 explosion that devastated much of Beirut's port area was caused by a fire in a warehouse that had been storing explosive materials, reportedly including 2,700 tons of ammonium nitrate. As of today, more than 100 deaths and over 4,000 injuries have been reported.