The leaders also announced the capture of Gadhafi's former intelligence chief, Abdullah al-Senoussi, who is also wanted by the ICC on the same charge.  

They said Senoussi was detained on November 20 in the southern desert, not far from where Seif al-Islam was seized by militiamen from the western town of Zintan a day earlier. 

Libyan transitional authorities said the two captured men would be given a fair trial in Libya.

The ICC issued arrest warrants for Seif al-Islam, his father, and Senoussi in June, for violently suppressing a pro-democracy uprising. ICC prosecutor Luis Moreno Ocampo plans to travel to Libya in a week to discuss arrangements for the trial.

In a statement on November 19, the US State Department said the capture and trial of Seif al-Islam “would be another step away from a four-decades-long dark chapter in Libyan history” and help the Libyan people achieve “the peaceful and democratic future they deserve.”

The US also urged Libya to treat all prisoners humanely and in accordance with international standards. Transitional fighters who seized Moammar Gadhafi in his hometown of Sirte on October 20, were seen beating him before he died, prompting international concern about his son's treatment in custody.