NBC, msnbc.com and news services report:

Moammar Gadhafi's son Seif al-Islam — the only wanted member of the ousted ruling family to remain at large — was captured as he traveled with aides in a convoy in Libya's southern desert, Libyan officials said Saturday. Thunderous celebratory gunfire shook the Libyan capital as the news spread.

A spokesman for the Libyan fighters who captured him said Seif al-Islam, who has been charged by the International Criminal Court for crimes against humanity, was detained about 30 miles west of the town of Obari with two aides as he was trying to flee to neighboring Niger. But the country's acting justice minister later said the convoy's destination was not confirmed.

His capture just over a month after his father was killed leaves only former intelligence chief Abdullah al-Senoussi wanted by the ICC, which indicted the three men for in June for unleashing a campaign of murder and torture to suppress the uprising against the Gadhafi regime that broke out in mid-February.

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