A man thought to have been the mastermind behind a 1996 bombing in Saudi Arabia which killed 19 American servicemen has been captured after a nearly two-decade manhunt.
Ahmed al Mughassil was one of the FBI's most-wanted terrorists and was described in 2001 as the head of the armed wing of the shadowy Saudi Hezbollah group.
On 25 June, 1996, a bomb inside a truck parked near the Khobar Towers - an eight-storey dormitory in Dharan, eastern Saudi Arabia, for US Air Force personnel - killed 19 Americans and wounded 372 more.
The blast tore off the face of one side of the building and left a massive crater.
It was the deadliest such attack targeting US forces since the 1983 bombing of the US Marines' barracks in Beirut, which killed 241 American servicemen.
The 48-year-old suspect was arrested in Beirut and has been transferred to Riyadh, according to the Asharq Alawasat newspaper.
The FBI had offered a $5m reward for information leading to his arrest.
Al Mughassil, also known as Abu Omran, is one of 14 people named in a 2001 indictment in Virginia in connection with the 1996 bombing. The charges include murder of federal employees and bombing resulting in death.
The indictment says that elements of the Iranian government inspired, supported and supervised members of the Saudi Hezbollah group in the Khobar Towers attack, but did not name any Iranian officials.
A Saudi official told Associated Press news agency that al Mughassil was detained two weeks ago after arriving in Beirut from Iran. He allegedly tried to seek cover in a southern Beirut neighbourhood that is a stronghold for Lebanon's Hezbollah.
The official said intelligence agencies believe four others wanted over the bombing are living in Iran.
Saudi Arabia has never directly blamed Iran and Tehran has repeatedly denied being involved.
In 2006, US District Judge Royce Lamberth ruled the Iranian government financed the bombing and ordered it to pay $254m to victims.
John Kirby, a spokesman for the State Department, said: "The United States continues to stand with the victims and families harmed by this attack, and we're going to continue working with Saudi Arabia and the international community to bring to justice all the perpetrators of it."
The US later moved its Air Force to a compound in the desert south of Riyadh, before withdrawing troops from Saudi Arabia in 2003.
Three other Saudis - Ali al Hoorie, Abdelkarim al Nasser and Ibrahim al Yacoub - are still on the FBI's most-wanted list for the attack.
Nine have been imprisoned in the county for the past 19 years and were given secret trials with unknown verdicts in connection with the attack, according to author Toby Matthiesen.
(Sky News)
