Story highlights Anti-Islam message sprayed on wall of Perth mosque, as hundreds prayed inside

Australian PM says he "strongly" condemns attack against mosque

(CNN) Cars were set alight at a Western Australian mosque on Tuesday night as children prayed just meters away in what a local imam described as an "act of hate."

Vandals also scrawled "F*** Islam" on a wall outside the mosque in Thornlie, Perth, which is adjacent to the Australian Islamic College. Hundreds of local Muslims had gathered there for evening prayers.

Western Australian police confirmed four cars were set on fire using an accelerant. One of the vehicles had been completely destroyed in the blaze.

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No one was injured in the attack.

Thornlie Mosque Imam Yahya Adel Ibrahim told CNN worshipers had run outside when they heard one of the cars explode.

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