The Indonesian police Monday warned of possible attacks during Christmas and New Year holidays by the terror group led by the country's most wanted militant Noordin Moh Top.

Noordin is believed to be the suspected brains behind a series of major bombings since October 2002, when two subsequent attacks at two nightclubs on Bali island killed 202 people.

Police believed the Malaysian-born militant also masterminded the triple suicide bombings on the same island last year that killed 19 people.

"He (Noordin) is still out there. Security officers and other societies should work together to prevent (attacks)," National Police Chief Sutanto told reporters here.

He said all provincial police stations would deploy their maximum strengths to ensure security during the holidays.

"We are doing our utmost to prevent more attacks," he said.

Editor: Donald