As Islamic State threat mounts on its doorstep, Indonesia scours a jungle

Members of the Indonesian anti-terror police hold guns in preparation for a security operation ahead of Christmas and New Year in Jakarta, December 23, 2015. REUTERS/Garry Lotulung

POSO, Indonesia (Reuters) - Indonesian forces are mobilising for a manhunt in steamy jungles on the far-flung island of Sulawesi to flush the country's most-wanted man from his hideout and deal a pre-emptive blow to Islamic State. The real threat could be much closer to home.

Militant leader Santoso, the first Indonesian to publicly pledge loyalty to the radical jihadist group that holds swathes of territory in Syria and Iraq, has eluded capture for years. He has until Jan. 9 to surrender.