The blast Saturday in Palu, capital of the Central Sulawesi province, came after warnings of militant violence during the Christmas and New Year season in Indonesia, according to Reuters.
Pork is forbidden to Muslims, who account for 85% of the country’s population. Eastern Indonesia has large pockets of Christians.
Central Sulawesi’s police chief said authorities were tightening security, especially in places of worship, and had closed the town gates to prevent any more violence.