Indonesian police questioned Tuesday a college student and aid agency volunteer who allegedly arranged shelter for terrorists behind hotel bombings in Jakarta.

Mathematics and science major Sonny Jayadi, 24, was believed to have rented rooms at a Jakarta boarding house for militant brothers slain last week in a raid on the building, police spokesman Nanan Sukarna said.

Jayadi was arrested Saturday in the West Sumatra coastal town of Padang, where he was helping victims of a powerful Sept. 30 quake that killed more than 800 people and devastated vast areas of the country's westernmost island.

Jayadi, who remained in custody Tuesday for interrogation, allegedly paid rent for Syaiffudin Zuhri and Mohamad Syahrir – key members of a terrorist cell led by the late regional al-Qaida commander Noordin Top.

Zuhri allegedly recruited two young suicide bombers, while Syahrir was an explosives expert. A third brother, Ibrohim, worked as a florist at the J.W. Marriott and the Ritz-Carlton hotels and smuggled in the bombers and explosives.

Ibrohim was gunned down by counterterrorism forces in August during an 18-hour siege at a hide-out in Central Java.

The July 17 hotel blasts killed seven people and wounded more than 50, ending a four-year lull in terrorism in the Muslim-majority country.

Authorities investigating the latest attacks have arrested 12 suspects and killed another nine in gunbattles, Sukarna said.

Indonesia, the world's largest Muslim-majority nation, has been hit by a wave of terrorist attacks in recent years that have killed 250 people. The deadliest was the 2002 Bali suicide bombing, seven years ago this week, which killed more than 200 people, most of them Western tourists.