June 11 (Reuters) - Major Gulf stock markets edged lower in early trading on Thursday after the United States launched fresh attacks on Iran, and U.S. President Donald Trump vowed further attacks unless a deal is reached.

Washington and Tehran exchanged airstrikes for the second day in a row. This latest escalation erupted earlier this week after a US Apache helicopter was shot down near the Strait of Hormuz, leading to retaliatory strikes across Iran and against US bases in the region.

Iran announced the closure of the strait after the US attacks.

The Saudi index fell 0.1 percent, affected by a 0.4 percent drop in Al Rajhi Bank shares.

The index in Dubai fell 0.7 percent, amid a 1.5 percent decline in shares of Emaar Properties.

In Abu Dhabi, the index fell 0.3 percent. The Qatari index declined 0.2 percent.

By 0702 GMT, Brent crude futures had risen eight cents, or 0.09 percent, to $93.18 a barrel.