Stock markets in the Gulf ended mixed on Monday, with the Saudi index extending gains from the previous sessions when it reached its highest in over 15 years.

Saudi Arabia's benchmark index gained 0.5%, at its highest since July 2006, led by a 1.4% rise in the kingdom's biggest lender Saudi National Bank and a 1.8% increase in Saudi Telecom Company.

Oil prices, a key catalyst for the Gulf's financial markets, were steady as investor bets that global supply will remain tight amid restraint by major producers were offset by a rise in Libyan output.

The Qatari index finished 0.3% higher, led by a 2.4% increase in Qatar National Bank.

Last week, the Gulf's biggest bank reported a 10% increase in annual net profit driven by loan growth.

However, Qatar Islamic Bank fell 1.2%, despite reporting a rise in annual profit.

Investors remain cautious while uncertainties remain around the developments in US monetary policy, said Wael Makarem, senior market strategist at Exness.

"Markets in the region have also seen investors move to secure their profits after several increases in the last few days."

Dubai's main share index fell 0.7%, dragged down by a 2.3% fall in Emirates NBD Bank and a 1.2% decrease in Emirates Integrated Telecommunications.

Three fuel trucks exploded, killing three people, and a fire broke out near Abu Dhabi airport on Monday in what Yemen's Iran-aligned Houthi group said was an attack deep inside the United Arab Emirates.

The Houthi movement, which is battling a Saudi-led coalition that includes the UAE, has frequently launched cross-border missile and drone attacks on Saudi Arabia, but has claimed few such attacks on the UAE, mostly denied by Emirati authorities.

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The Abu Dhabi stock market index eased 0.1%, giving up early gains after the news of the explosion and fire. The stock market index had gained as much as 0.3% in early trade.

Outside the Gulf, Egypt's blue-chip index added 0.2%, ending two sessions of losses, helped by a 0.4% gain in top lender Commercial International Bank Egypt.

SAUDI ARABIA rose 0.5% to 12,166

ABU DHABI fell 0.1% to 8,413

DUBAI down 0.7% to 3,179

QATAR gained 0.3% to 12,471

EGYPT rose 0.2% to 11,859

BAHRAIN was flat at 1,815

OMAN lost 0.6% to 4,217

KUWAIT added 0.5% to 8,093