**The trial has begun of a man who is alleged to have assisted in the twin suicide hotel bomb attacks in Jakarta on 17 July 2009.**Amir Abdillah is charged under the anti-terror laws of concealing information and harbouring terrorists.
Prosecutors said he was the driver for alleged terrorist Noordin Top, who was shot by police in a September raid on a central Java village.
The hotel bombings ended a four-year lull in terrorism in Indonesia.
“I heard two sounds like ‘boom, boom’ coming from the Marriott and the Ritz-Carlton - then I saw people running out”
Eko Susanto, security guard
In pictures: Jakarta hotel blasts
The July attacks at the JW Marriott and Ritz Carlton hotels killed seven people and injured more than 50.
Mr Abdillah - who appeared at in South Jakarta District Court on Wednesday - was arrested a month after the attacks as the first suspect in the case.
If convicted, he could be sentenced to death.
He is believed to have given information that led to the arrests of several other suspected terrorists, and two deadly raids in Central Java that killed four suspects.
The BBC’s Karishma Vaswani says he is also believed to be the man who booked the room, number 1808, in the JW Marriott where the bombs went off.
INDONESIA ATTACKS
- Dec 2000 - Church bombings kill 19
- Oct 2002 - Bali attacks kill 202, many Australian
- Dec 2002 - Sulawesi McDonalds blast kills three
- Aug 2003 - Jakarta Marriott Hotel bomb kills 12
- Sept 2004 - Bomb outside Australian embassy in Jakarta
- Sept 2005: Suicide attacks in Bali leave 23 dead, including bombers
Indonesia braces for tourism blow
Police have killed six and arrested more than a dozen suspects including a Saudi citizen, who is accused of helping finance the bombings.
Malaysian-born Noordin Top was blamed for a string of terrorist attacks in Indonesia that killed more than 250 people.
Indonesia suffered a number of bomb attacks - mainly linked to the militant group Jemaah Islamiah - in the first years of the century.
The country of 240 million people has been praised in recent years for maintaining a pluralist democracy, while punishing Islamists behind a series of bombings.
Attacks on two nightclubs in Bali in October 2002 killed 202 people, most of them Australian.
The Marriott Hotel was the target of a bomb attack in August 2003 in which 13 people were killed.
Since then, a combination of new laws, anti-terror training, international co-operation and reintegration measures have kept Indonesia peaceful, analysts have said.