Suspected cut-throat jihadists have taken their evil business to the Southeast Asian country of Indonesia.

On Sunday, suicide bombers struck at three churches during mass in Surabaya, Indonesia’s second biggest city, killing at least 10 and wounding dozens of others.

The bombings were the deadliest in years to strike the world’s biggest Muslim-majority country.

Indonesia, which will begin the holy fasting month of Ramadan this week, has been on high alert over attacks by homegrown militants, including some incidents claimed by the Islamic State group.

No one has yet claimed responsibility for the Sunday bombings.

“Nine people are dead and 40 are in hospital,” East Java Police spokesman Frans Barung Mangera told reporters, adding that two police officers were among the injured.

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The attacks took place at the Santa Maria Church in the Ngagel Madya area of Indonesia’s second-largest and busiest city, the Surabaya Centre Pentacostal Church and the GKI Diponegoro Church, the Straits Times reported.

Television footage broadcast by major networks appeared to show a motorcycle driver entering the grounds of a church before a bomb was detonated.

Other images displayed a vehicle engulfed in flames at one location.

Police bomb experts were called in to disarm still active explosives at the Gereja Pantekosta Pusat Surabaya (Surabaya Centre Pentacostal Church), with an AFP reporter at the scene hearing two loud explosions.

Images from one scene showed a body lying outside the gate of Santa Maria catholic church and members of Indonesia’s bomb squad poring over the rubble.

At least one of the attackers was killed when they detonated their bomb at Santa Maria. It was not clear if any other perpetrators were among those killed or injured.

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