Children in blasts 'horrifying': Bishop

The use of children in deadly suicide blasts in Indonesia is terrorism at a whole new horrifying level, Foreign Minister Julie Bishop believes.

The minister said there is a heightened risk of further terror attacks during Ramadan, after a family of six blew themselves up on Sunday, killing 13 and wounding 40 Christians.

"What was particularly horrific about the attacks over the weekend was the use of children in the terrorist organisation. We have not seen that in Indonesian attacks before and this takes it to a whole new horrifying level," Ms Bishop told the Seven Network on Tuesday.