JAKARTA, Indonesia -- An explosive device blew up at a shopping mall and injured two people Thursday, worsening jitters in Indonesia, while the world moved to isolate a Southeast Asian terror group tied to al-Qaida that is suspected in the deadly Bali bombings.

Australia said 47 nations back its campaign to get the U.N. Security Council to declare Jemaah Islamiyah a terrorist organization, and Britain banned the group and ordered its bank accounts frozen.

The U.S. State Department added Jemaah Islamiyah to its list of terrorist groups Wednesday, thus freezing its assets, making it a crime to contribute funds and barring members from traveling to the United States.

The actions showed the international community has put Jemaah Islamiyah in its sights since the Oct. 12 Bali bombing, which left more than 180 people dead and 300 injured, mostly foreign tourists.

There was no claim of responsibility for Thursday's explosion at the shopping mall in Bandung, 125 miles southeast of Jakarta, but police described the device -- and two others defused at another mall -- as being like large firecrackers. Wrapped like a gift, the device blew up as a janitor tried to move it from a cleaning cart. Two people suffered slight injuries.

The devices appeared intended to frighten, rather than kill, police said, and there was no indication who made or planted them.