DUBAI, June 26 (Reuters) - Gulf stock markets fell sharply in early trade on Sunday in response to the global market turmoil caused by Britain's decision to leave the European Union.

Dubai's index .DFMGI was down 4.6 percent after 10 minutes to 3,211 points, near technical support on the May low of 3,197 points.

Speculative stocks favoured by local retail investors were hit hardest, with Arabtec ARTC.DU losing 6.4 percent. Blue chips such as Emaar Properties EMAR.DU , down 3.5 percent, fared relatively well.

Abu Dhabi's index .ADI sank 3.3 percent with Dana Gas DANA.AD , the most heavily traded stock, plunging 5.4 percent.

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