Police said they had found 1,400 bombs in a warehouse in the Indonesian capital. Two people, a guard and the owner of the warehouse in north Jakarta, were being questioned but the owner of the bombs was still on the run, Jakarta police detective chief Harry Montolalu said.

He said the bombs were packed in 150 cardboard boxes, but did not elaborate, saying further details would be released later.

Jakarta has been hit by a spate of unsolved bomb attacks in the past 12 months, one of which killed 10 people in the basement of the Jakarta Stock Exchange building in September. The latest bombings, on Christmas Eve, targeted churches and the homes of Christian ministers.