Police say bomb-making materials have been found at a house in Indonesia's capital and they are investigating possible links to terrorism.

Jakarta police spokesman Col. Rikwanto said Thursday that residents rushed to Muhammad Toriq's home in Jakarta as plumes of smoke shot up from the house late Wednesday, and found explosive devices. Toriq escaped.

A bomb squad team is investigating the explosives. Rikwanto says the devices were packed with ball bearings and nails to maximize the impact of the blast.

It came amid a security crackdown in recent days in which two militants were killed and three others arrested.

Indonesia has been hit by a string of terror attacks blamed on al-Qaida-linked militants that have killed more than 260 people since 2002.