Indonesian police say they have arrested one of the country's most wanted men.
Abu Tholut is suspected of helping to set up a militia training camp in Aceh province, recruiting militants and raising illegal funds for "terror activities".
He is also suspected of plotting attacks on foreigners in Jakarta and the assassination of political leaders.
Mr Tholut was arrested without a fight at his home in Kudus, Central Java.
The 49-year-old - who is also known as Mostofa, Pranata Yuda and Imron Baehaqi - was detained by Indonesia's anti-terrorist unit Densus 88.
The suspected bombmaker is alleged to have previously trained militants at camps run by the radical group, Jemaah Islamiah (JI).
It is also claimed the former medical student established training centres for groups with links to al-Qaeda in the Philippines.
In 2004, he was jailed for seven years for the bombing of a shopping centre in Jakarta but was released early for good behaviour.
Indonesia has suffered a number of bomb attacks - mainly linked to JI.
Attacks on two nightclubs in Bali in October 2002 killed 202 people, most of them Australian.
The Marriott Hotel was the target of a bomb attack in August 2003 in which 12 people were killed.
Indonesia has introduced a combination of new laws, anti-terror training, international co-operation and reintegration measures to tackle extremism.
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