Mustafa Hamdan was the head of the Lebanese

Lebanon

Lebanon , officially the Republic of LebanonRepublic of Lebanon is the most common term used by Lebanese government agencies. The term Lebanese Republic, a literal translation of the official Arabic and French names that is not used in today's world. Arabic is the most common language spoken among...

 Presidential Guard brigade.
On 28 August 2005, he was arrested along with 3 other Lebanese generals during the investigation of the assassination of former Lebanese Prime Minister Rafik Hariri

Rafik Hariri

Rafic Baha El Deen Al-Hariri , was a business tycoon and the Prime Minister of Lebanon from 1992 to 1998 and again from 2000 until his resignation, 20 October 2004.He headed five cabinets during his tenure...

, who was killed on 14 February 2005 in a massive explosion targeting his motorcade near downtown Beirut

Beirut

Beirut is the capital and largest city of Lebanon, with a population ranging from 1 million to more than 2 million . Located on a peninsula at the midpoint of Lebanon's Mediterranean coastline, it serves as the country's largest and main seaport, and also forms the Beirut Metropolitan...

. Hamdan was known to be a close aide-de-camp to Lebanese President Émile Lahoud

Émile Lahoud

General Émile Jamil Lahoud is a former President of Lebanon. Lahoud is a Maronite-Catholic, as is required for the Lebanese presidency. Under Lebanon's unwritten constitutional agreement, the National Pact, the presidency is earmarked for Maronite_Catholic, the parliament speaker's post for a Shia...

.
Mustafa Hamdan is also known for fighting Israel in 1982 .
He was released, along with the other three generals in detention, on April 29, 2009.