Hannibal Gaddafi, the high-living businessman son of the late Libyan dictator, was freed late Friday, several hours after he was kidnapped in Lebanon by an unknown armed group, security sources told AFP.
Lebanese police freed Gaddafi and were set to question him, one source said, without specifying where the businessman had been released.
A second security source said Gaddafi had been "kidnapped by an armed group in the region of Bekaa while he was travelling from Syria, before being released on Friday night in the same region".
Bekaa is an eastern stronghold of Lebanese Shiite movement Hezbollah.
Lebanon's National News Agency said Hannibal Gaddafi's kidnappers had demanded "information on Mussa Sadr", a Lebanese Shiite leader who went missing in 1978.
Beirut blamed the disappearance on the longtime Libyan strongman, and the Gaddafi family was branded persona non grata by Lebanon, especially among members of the Shiite Muslim community.
A former Libyan envoy to the Arab League, Abdel Moneim al-Honi, told the pan-Arab newspaper Al-Hayat in 2011 that Sadr had been ordered killed during a visit to Libya and was buried in the southern region of Sabha.
Late Friday, the Lebanese private television channel Al-Jadid broadcast a video purportedly showing Kadhafi.
In the video he appears to have been beaten up and has two black eyes, but he says that he is "well" and calls on "all those who have evidence about Sadr to present it without delay".
It was not clear when or where the video was filmed.