Two Saudi Arabian policemen and two suspects were killed in a security operation after an anti-Shiite attack killed five people in the kingdom’s east, the interior ministry said on Tuesday.

Two Saudi Arabian policemen and two suspects were killed in a security operation after an anti-Shiite attack killed five people in the kingdom's east, the interior ministry said on Tuesday.

An exchange of fire occurred between security forces and suspects in Qassim region north of Riyadh, a ministry spokesman said, adding that two policemen were also wounded.