Indonesia’s government warned on Friday of a campaign to destabilise the country after co-ordinated suicide bombs on two luxury hotels in the country’s capital, Jakarta, killed nine people including at least five foreigners.

Police said the early-morning attacks, which injured at least 53, had the hallmarks of Jemaah Islamiyah, the south-east Asian terrorist group with links to al-Qaeda. If true, this would be its first major operation since carrying out four attacks between 2002 and 2005 in Bali and Jakarta.