Story highlights Bombing in holy city of Medina kills four

Suicide bomber killed in another attack in Saudi city of Jeddah

Attacks come during one of the deadliest holy months in recent memory

(CNN) Three suicide attacks in 24 hours -- that's how Saudis will remember the end of Ramadan, a month that has seen the wider region plunged into a wave of terror-related violence.

The attacks -- including one in Medina, one of the holiest sites in Islam -- follow massive jihadi assaults from Turkey to Iraq that have been been tied to ISIS. Analysts believe events in Saudi Arabia could also be the work of the terror group.

There has been no claim of responsibility so far.

Two of the attacks failed but four people were killed in the third, all of which appear to be coordinated -- targeting both Saudi security forces and Western interests.

The first occurred before dawn near the U.S. Consulate in Jeddah. The attacker killed only himself after detonating an explosive according to the state-run Saudi Press Agency. Policemen were injured in the attack.

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