(AHN) - One of the main suspects in the assassination of former Lebanese Prime Minister Rafiq Hariri is continuing a hunger strike until there are further judicial investigations into the matter. Ali Hajj, former security chief in Lebanon, was detained on suspicion of involvement in the February 14, 2005, assassination of Hariri. Hajj's attorney Issam Karam said that his client would not halt his hunger strike without an investigation that "proves his innocence." Hajj and three other former security officials have been on a hunger strike since Sunday in protest against a decision to move him to a newly built wing at Roumieh Central Prison. Former Prime Minister Rafiq Hariri was killed by a car bomb on February 14 of last year. The international community has suspected Syrian involvement in the case, while numerous Lebanese officials have been arrested in connection to the assassination. The United Nations is expected to publish a report on the matter in the coming weeks.