Q+A: What will be the impact of Indonesia's hotel bomb attacks

By Sara Webb

JAKARTA (Reuters) - Bomb blasts ripped through the JW Marriott and Ritz-Carlton hotels in Jakarta's business district on Friday, killing nine people and wounding dozens in attacks that could dent investor confidence in Indonesia.

A car bomb also blew up along a toll road in North Jakarta, police said without giving further details. Indonesia's Metro TV said two people had been killed. An unexploded bomb was also later found at the Marriott, police said.

The apparently coordinated bombings are the first in several years and follow a period in which the government had made progress in tackling security threats from militant Islamic groups, bringing a sense of political stability to Southeast Asia's biggest economy.

Some analysts have already cast suspicion on remnants of the Jemaah Islamiah group, blamed for previous attacks including a car bombing outside the Marriott in 2003 as well as bombings on the resort island of Bali the previous year that killed 202 people.

Here are some questions and answers on security in Indonesia:

IS THIS UNEXPECTED?

Yes. Indonesia had made enormous progress in containing the threat from militant group JI which security officials and analysts said was behind several fatal bomb attacks on Western targets including hotels and bars in Jakarta and the resort island of Bali.

The Indonesian authorities, with help and training from their Australian and U.S. counterparts, have increased security and surveillance in recent years.