Four men have been arrested over a petrol bomb attack on a Roman Catholic church last month in Muslim-majority Indonesia's province of Yogyakarta, a top anti-terror officer said on Thursday.
Brig. Gen. Pranowo, director of an anti-terror unit, said the four were arrested in the Sleman regency of Yogyakarta on Wednesday and would be charged over the June 9 attack on the Santo Yusuf church in Sleman.
A small fire burnt part of the church's front gate and fence but no one was hurt.
"We are still working on this case. We haven't touched the brain behind this attack because so far they refuse to talk," Pranowo said.
Mobs in June also attacked four churches in two neighboring suburbs of the Indonesian capital Jakarta, slightly injuring a priest and causing damage.
Three of those churches were located in buildings incommercial areas which did not have permits for use as places of worship. Such unauthorized churches have come in for attack in the past.
Indonesia is the world's largest Muslim-populated state, with 88 percent of its 212 million people following Islam. Some eight percent are Christians.
But Islam is not the official religion and the constitution provides for freedom of worship.