Tourists killed in Yemen blast
Four South Korean visitors and Yemeni guide killed at Unesco tourist site.

No group has claimed responsibility for the explosion and security sources have not accused any group.
But Khaled al-Hammadi, a journalist in Yemen’s capital, Sanaa, told Al Jazeera that the attacks come after the announcement of new leadership for al-Qaeda in the Arabian peninsula.
“The Yemeni government has conducted a lot of operations to combat al-Qaeda’s operations in the country with the co-operation of the international community, particularly the US government.
“There are currently a lot of [court] trials in which al-Qaeda members are accused,” he said.
The blast occurred in the fortress town of Shibam a Unesco World Heritage site famous for its 16th century mud brick buildings that rise up to 16 storeys.
It happened as the tourists passed a vehicle at the entrance to Mahram Bilqis, an ancient oval-shaped temple celebrated for belonging to the Queen of Sheba, an official said.