Egypt condemns the suicide bombing of a Shia mosque in eastern Saudi Arabia that killed four and wounded eighteen others, a foreign affairs ministry statement read.

“[Egypt] refuses all attempts of destabilisation and frightening citizens in the Saudi kingdom,” the statement released Friday night added.

Two gunmen attacked the Imam Reza Mosque, wearing suicide bomb belts, during Friday prayers.

The ministry has extended its deepest condolences to the families of the victims, and wished the injured a speedy recovery.

The foreign affairs ministry reiterated that Egypt refuses and condemns all forms of terrorism and violence and “calls for uniting international efforts to eliminate this [phenomenon], the reasons behind it, and its funding."

Shias in Saudi Arabia, who make up an estimated 10 to 15 percent, have previously been targeted by the Islamic State group, as they believe they are heretics.

No group claimed responsibility for the attack yet.