MIDEAST STOCKS-Threats by Yemen's Houthis to hit Saudi Arabia again rattle Gulf bourses

By Ateeq Shariff

Oct 15 (Reuters) - Gulf markets ended lower on Thursday as the Houthis threatened more attacks on Saudi Arabia, putting the country's benchmark index on track for a sixth weekly loss.

The Saudi index .TASI dropped 0.3%, pulled down by a 3.1% slide in ACWA Power Company 2082.SE and 0.4% fall in oil behemoth Saudi Aramco 2222.SE.

On Wednesday, Yemen's Houthis pledged to keep attacking airports and oil facilities in the kingdom. The threat came a day after a Houthi strike caused extensive damage to Aramco's headquarters in Dhahran, where a fire spread across several floors, three people with direct knowledge of the matter told Reuters.

The European Union and Gulf states postponed a joint summit planned for Saudi Arabia next week, as sustained attacks by the Iran-aligned Houthis raised concerns about air travel to and from the kingdom, officials said on Thursday.

The international benchmark lost $1.15, or 1.1%, to $104.91 a barrel by 1157 GMT. O/R

Shipping risks are also growing. A container ship and a dry bulk carrier sank near the Strait of Hormuz within 24 hours after projectiles hit them in separate incidents, maritime officials said on Wednesday.

Qatar's index .QSI led losses in regional stocks, falling 1.2% to its lowest level in more than six years.

Sentiment stayed fragile as drawn-out negotiations left regional geopolitical risks unresolved. Worries about escalation persist, and Hormuz shipping disruptions are sustaining caution over energy flows, with investors looking for any material development that could defuse tensions, said Milad Azar, market analyst at XTB MENA.

Dubai's main index .DFMGI lost 1.1% as top lender Emirates NBD ENBD.DU slid 1.7%. Abu Dhabi's index .FTFADGI slipped 0.3%.

On Thursday, the International Monetary Fund warned a long war in the Middle East, and further disruption to energy production, shipping routes or critical infrastructure posed the biggest risk to economies in the Middle East and Central Asia.

Outside the Gulf, Egypt's blue-chip index .EGX30 advanced 1.5%, building on the prior session's rebound, which broke a six-day slide.

Egypt has stabilised its macroeconomy despite a tough external backdrop but must accelerate reforms to cut the state's role in the economy, an IMF official said on Thursday.