Abdullah al-Senussi, head of the Libyan Intelligence Service, speaks to the media in Tripoli in this August 21, 2011 file photo.[Photo/Agencies]

TRIPOLI - Former Libyan intelligence chief Abdullah al-Senussi has been captured, an official of the ruling National Transitional Council (NTC) said Sunday.

"Senussi was captured in Brak al-Shate by a fighter brigade named Ahrar al-Fazan which was led by Ahmed Hesnawe," the NTC spokesman Abdul Hafid Ghoga told reporters here Sunday.

The NTC fighters who were tracking al-Senussi for two days arrested him at his sister's house, about 70 kilometers south of the desert city of Sabha.

Senussi, who had been at large since the fall of Tripoli to NTC forces in August, was seized earlier in the day in the southern Libyan town of Gaara by Sabha militia who are looking for a safe place to keep him in custody.

Senussi, 62, is the brother-in-law and former right-hand man of Libya's former strongman Muammar Gadhafi.

The former Libyan intelligence chief, along with Gadhafi and his second son Saif al-Islam, is wanted by the International Criminal Court on charges of crimes against humanity. The court issued arrest warrants for them in late June.