A car bomb has exploded at police headquarters in the Indonesian city of Surabaya, causing casualties, police say.
"Just now, at 8.50 am, there was a bomb attack involving a vehicle," East Java police spokesman Frans Barung Mangera said.
"We can confirm there are casualties among our members, but that's all we can say now," he said.
The attack came a day after six suicide bombers attacked three churches in the city, killing themselves and eight other people.
More to follow.