Family of detained former MP Hassan Yaacoub blocked Wednesday the airport road and erected tents to protest over his arrest.
Last month, Investigative Judge Peter Germanos rejected a request from Yaacoub’s defense team to release him.
He was arrested in December over his alleged involvement in the kidnapping of Hannibal Gaddafi, son of late Libyan leader Moammar Gaddafi.
Yaacoub's father was accompanying Imam Moussa al-Sadr and another man when they disappeared in Libya in 1978.
Yaacoub was admitted to hospital several times since his incarceration due to deterioration in his health condition. His family has claimed that the former lawmaker was being subjected to mistreatment at Roumieh Prison.