SANAA, July 14 (Reuters) - A Spanish woman died on Saturday after being wounded in an attack that killed seven Spanish tourists in Yemen last week, a doctor said.

Maria Vitorica, 50, died in the al-Thawra Hospital in the capital two days after doctors had said she may have been brain dead, Dr Ahmad al-Anssi told Reuters.

He said her body would be transferred to Spain on Saturday.

Yemen has said its security forces killed an Egyptian who helped mastermind the suicide car bomb attack last Monday that killed the Spanish tourists and two Yemenis at the Queen of Sheba Temple in Marib, about 150 km (95 miles) east of the capital Sanaa.

Yemen, which joined the U.S.-led war on terrorism after al Qaeda's Sept. 11, 2001 attacks on U.S. cities, has offered a $75,500 reward for information leading to the capture of militants behind the attack.

Security sources have said that al Qaeda earlier issued a statement demanding the release of some of its members jailed in Yemen -- which has been battling Islamist militants for years -- and threatening unspecified action.

Yemen, the ancestral home of al Qaeda leader Osama bin Laden, is viewed in the West as a haven for Islamist militants. It has seen several major bombings.

One of the poorest countries outside Africa, Yemen has been trying to encourage tourists put off by kidnappings and bombings and boost foreign investment as its oil resources dwindle.

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