Where are the sons? [Updated]

Reuters reports on the suspected whereabouts of Saif al-Islam:

Muammar Gaddafi’s son Saif al-Islam is believed to be still at large in Libya’s desert, a member of the National Transitional Council said on Thursday after NTC officials said the former Libyan leader had been found and killed.

Abdelmajid Saif al-Nasr told the Qatar-based Al Jazeera satellite channel that Saif al-Islam, who is wanted by the International Criminal Court for crimes against humanity, was last known to have been in the area of Bani Walid and was believed to be "in the desert" around the town.

"But he will be captured soon," said Saif al-Nasr.

Fifth son Mutassim is believed to have been in Sirte, along with his father, but his whereabouts are still unknown: 

Deputy Defense Minister Fawzi Abu Katif on Wednesday told the AP that authorities still believe Qaddafi’s son Muatassim is among the ex-regime figures holed up in the diminishing area in Sirte. He was not seen on the ground after the final battle on Thursday.

A major remaining question is whether pro-regime elements will continue fighting without Muammar, and whether his sons have enough support to become leaders of an insurgency, should it emerge.

Update: Mutassim has reportedly beem killed, says CNN: 

Gadhafi’s son, Mutassim, and his chief of intelligence, Abdullah al-Senussi, have been killed, according to Anees al-Sharif, spokesman for AbdelHakim Belhajj of the Tripoli military council.