KUALA LUMPUR - One of the attackers in the Jan 14 Jakarta terrorist attacks made a phone call to a Malaysian number before the incident, Bukit Aman Special Branch director Fuzi Mohd Harun said on Tuesday (Jan 26).

Indonesian police made the discovery during a forensic investigation into the attacks, said Mr Fuzi according to state news agency Bernama.

"We (Malaysian police) are now investigating this new finding," Mr Fuzi told reporters on the sideline of the two-day International Conference on Deradicalisation and Countering Violent Extremism in Kuala Lumpur.

Eight people were killed in the coordinated attacks on the Indonesian capital, including all four suicide bombers who went on the shooting and bombing rampage. More than 30 people including five policemen were seriously injured.

Muhammad Bahrun Naim, the Indonesian founder of Katibah Nusantara group, the Malay-speaking arm of the Islamic State in Iraq and Syria (ISIS) group, is believed to have orchestrated the attack.

Mr Fuzi said investigations showed none of the attackers involved in the Jakarta bombing were Malaysians, Bernama reported.

He added, however, that Malaysian ISIS elements and Malaysians who have gone Syria to fight for ISIS were in communication.