Indonesian police on Sunday found video recordings of speeches by Usama bin Laden and other extremist Islamic propaganda at two houses once rented by the alleged mastermind of last month's bombings in Bali.
The discovery appeared to strengthen growing suspicions that Islamic radicals sympathetic to bin Laden's Al Qaeda terror network were behind the Oct. 16 blasts that killed almost 200 people, mostly foreign tourists.
Officers also unearthed an empty cartridge for an M-16 assault rifle at one of the two houses near Solo city, central Java, local police Lt. Col. Bambang Hameru said.
Hameru said the houses were once rented by Imam Samudra, the top suspect in the bombings, and several of his alleged accomplices. Samudra was arrested Thursday at a ferry port on the western tip of Java.
Police say Samudra has confessed to planning the bombings, and that he also received military training in Afghanistan.
"We found recordings of speeches by Usama bin Laden and military training clips featuring Arabs," said Sgt. Wahyono, who like many Indonesians uses only one name.
Officers also recovered several militant Islamic magazines, a tape recorder and computer, the state news agency Antara said.
The two houses were about a mile from the Ngruki Islamic boarding school, which until recently was run by cleric Abu Bakar Bashir.
Bashir is the alleged spiritual head of Jemaah Islamiyah, a regional terror group that intelligence officials believe was responsible for the Bali blasts.
The group is suspected of having links to Al Qaeda.
Police have not named Bashir as a suspect in the Bali bombings, but he was arrested after the attack on charges of masterminding a string of church bombings in 2000. Bashir denies involvement.
Meanwhile, Indonesian police and Australian forensic officers searched two other houses Samudra may have used. The houses were close to the town of Serang, about 60 miles from Jakarta, near where he was arrested. Police declined to give details on the operation.
The raids follow similar searches of houses in the area on Saturday. Police said they had found traces of potassium — which can be used in making explosives — in one of them.