MEDAN, INDONESIA: A suspected suicide bombing outside police headquarters in Indonesia’s city of Medan in North Sumatra killed the perpetrator and wounded some officers on Wednesday, police said, just a month after an attack on a former security minister.

The motive for Wednesday’s attack was not immediately clear, but Indonesia, the world’s most populous Muslim-majority country, has suffered a resurgence in homegrown militancy in recent years, with some attacks targeting police.

The suspected suicide bomber had died in the attack, a spokesman for the North Sumatra police, Tatan Dirsan Atmaja, said by telephone, adding that some police officers were wounded in the blast at 8:40 a.m. (0140 GMT).

National police spokesman Dedi Prasetyo said the blast happened in a car park near an area where people were queuing for clearance letters from police.

“We’re on alert right now,” Prasetyo told Kompas TV. “The explosion didn’t reach the center for the clearance letter service, it was just in a parking lot.”

The latest attack comes a month after a suspected Islamist stabbed and wounded Wiranto, Indonesia’s former security minister, who uses one name.