The Indonesian police have rounded up at least five more suspected militants in connection with Thursday's terror attack in the heart of Jakarta.

Police spokesman M. Iqbal told The Straits Times on Saturday (Jan 16) that counter-terrorism forces conducted simultaneous raids across Indonesia and nabbed the men.

He declined to disclosed the identities of the new suspects or details concerning the operation, believed to have been led by crack commandos from Detachment 88 between Friday and Saturday.

This brings to at least eight the total number of suspects associated with the five militants involved in Thursday's attacks, after three suspects were arrested earlier.

The five militants, who laid siege to a Starbucks cafe and police post at the busy downtown junction of Jalan M.H. Thamrin and Jalan K.H. Wahid Hasyim, were killed during the attacks.

The police have raised their operational tempo against local militant groups since Thursday's attack, which left seven people - including five militants - dead and more than 20 others injured.