At least 19 suspects have been arrested for plotting to bomb a cathedral in the Indonesian capital city during Easter, officials said.
Ansyaad Mbai, chief of the national anti-terrorism agency, said the suspects planned to bomb the Christ Cathedral just outside Jakarta.
The suspects had placed a series of explosives near the church in Serpong area. The devices - some disguised as books - were timed to go off just as Good Friday services at the 3,000-seat Roman Catholic church were about to begin.
"All those arrested are suspects connected to the book bombs, and planned to blow up the church," Mbai said after a security meeting at the presidential palace.