Four dead in attack on tourists

(CNN) -- Suspected al Qaeda militants opened fire on a convoy of tourists in a remote desert mountain valley Friday, killing two Belgian women and their Yemeni driver.

The shooting is the second recent militant attack on foreign tourists in Yemen.

The two slain women were traveling in a tourist convoy of at least four vehicles through an ancient ruin-filled desert valley called Wadi Daw'an in Yemen's eastern Hadramut region when the gunmen attacked, a security official said.

At least 10 suspects have already been taken into custody and all roads leading to the province have been cut, the official said later, adding that reinforcements have been sent to help with the search. E-mail to a friend

CNN's Ammar Benaziz in Dubai contributed to this report