[1] He served as a member of the Lebanese parliament until his resignation, on 5 August 2020, after the explosions in Beirut claiming that the government was "ineffective" to handle the incident.

[2] Marwan Hamadeh, also written as Marouan Hamadé (preferred French transliteration), was born into a Druze family in Baakleen, Chouf district, on 11 September 1939.

[3][4] His step brother, Ali Hamadeh, is a journalist who was a member of Saad Hariri's political party and is married to Nadine Jabbour Hamade.

[11] Hamadeh was one of four members of the Lebanese Parliament who voted against the extension of president Lahoud's term in office in September 2004.

[12][13] The blast is considered to have been the beginning of series of assassinations by Unit 121 of Lebanese politicians and journalists, mostly anti-Hezbollah and anti-Syrian figures.

[11][18][19][20] Then Syrian vice president Abdul Halim Khaddam visited Hamadeh at the American University of Beirut Medical Center after the attack.