Saudi authorities have arrested 10 more suspects in an alleged Iranian spy ring unveiled two months ago, an interior ministry spokesman said on Tuesday.

The eight Saudis, a Lebanese and a Turk bring the number of people arrested to 28, the official SPA news agency quoted the spokesman as saying.

A Lebanese arrested in March has since been released.

"The results of investigations by security services have led to the arrest of the other 10 involved in spying for this cell," the spokesman said.

On March 19, the interior ministry said authorities had arrested 16 Saudis, an Iranian and a Lebanese in four regions including the oil-rich Eastern Province , where Saudi Arabia 's Shiite Muslim minority is concentrated.

Shiite-dominated Iran has denied any involvement in the alleged spy ring.

Saudi Arabia 's ultra-conservative Sunni Muslim rulers have strained ties with Iran , which deteriorated further after a Saudi-led military intervention crushed Shiite-led pro-democracy protests in neighboring Bahrain in early 2011.

Διαβάστε ακόμα