DUBAI - Saudi Arabia's stock market resumed falling early on Monday after another top businessman was reported detained in a sweeping anti-corruption purge that has swept up dozens of senior political and economic figures.

The Saudi stock index was down 1.1 percent after 75 minutes as Al Tayyar Travel plunged 10 percent after the company quoted media reports as saying its founder Nasser bin Aqeel al-Tayyar, who holds direct and indirect stakes totalling 29.72 percent in the firm, was being held.

Kingdom Holding, which had tumbled 7.6 percent on Sunday after its billionaire chairman Prince Alwaleed bin Talal was detained, sank a further 2.8 percent.

National Industrialization Co (Tasnee) , in which Kingdom holds a 6.2 percent stake, fell 1.8 percent and Banque Saudi Fransi, in which Kingdom bought a 16.2 percent stake in September, dropped 2.3 percent.

After the close on Sunday, Kingdom Holding said it had the support of the Saudi government, and its share price is now close to the company's book value as of June 30.

But Saudi Arabia's new anti-corruption committee has the power to seize assets at home and abroad before the results of its investigations are known, and investors worry that the crackdown could ultimately result in forced sales of equities.

Declining stocks outnumbered gainers by 149 to 22. Among the gainers, Saudi Chemical Co added 1.3 percent after it reported a 52 percent jump in third-quarter profit.

In Dubai, the index sank 0.9 percent partly because of concern about the Saudi situation. High-end developer Emaar Properties dropped 1.2 percent and DAMAC Properties lost 1.0 percent; Saudis are major investors in the Dubai property market.

Shuaa Capital initially rose sharply after it posted a third-quarter profit attributable to shareholders of 23 million dirhams ($6.3 million) versus a loss of 35.3 million dirhams a year ago.

However, the stock then fell back to stand 1.8 percent lower; investors had already pushed it up sharply in the last few days in anticipation of a strong result, which was in line with the scale of improvement seen in second-quarter earnings.

Abu Dhabi's index sagged 0.3 percent as Aldar Properties fell 1.7 percent. Qatar dropped 0.8 percent as Qatar International Islamic Bank slid 3.4 percent in its heaviest trade for several months.

(Reporting by Andrew Torchia; editing by Mark Heinrich) ((andrew.torchia@thomsonreuters.com)(+9715 6681 7277)(Reuters Messaging: andrew.torchia.thomsonreuters.com@reuters.net))