Ahmed Mohammed Ahmed Haza al-Darbi, 37, has spent the last decade at the US naval base in southern Cuba where 168 "war on terror" prisoners remain. He faces life in prison if convicted.
"Mr al-Darbi's alleged crimes are serious violations of the law of war that were committed to terrorise and wreak havoc on the world economy," the chief war crimes prosecutor at Guantánamo, Brigadier General Mark Martins, said in a statement.
"We will be prepared to proceed toward his trial by reformed military commission if the Convening Authority refers charges."
Before Darbi can be arraigned, the charges must first be reviewed and approved by a legal official who is in charge of the military tribunals at Guantánamo.
The six charges before Darbi including aiding and abetting terrorism, attacks on civilian targets and attacks on a vessel, as well as aiding the enemy.
According to US military prosecutors, Darbi joined al-Qaeda around 1997, attending a training camp in Afghanistan and serving as a weapons instructor at a separate camp in the country. He also met the group's late leader Osama bin Laden.
He allegedly participated in a plot to bomb civilian oil tankers in the Strait of Hormuz, through which about a fifth of the world's traded oil passes, and off the coast of Yemen from 2000 to 2002, by receiving large amounts of money from al-Qaeda and training potential attack operatives.
Prosecutors accuse Darbi of namely participating in the 2002 attack against the MV Limburg, a French oil tanker, that killed a Bulgarian sailor, severely injured multiple civilians and caused a large oil spill in the Gulf of Aden.
Darbi is the eighth detainee to be sent before a special military tribunal since President Barack Obama took office in 2009. He is married to a sister of Khalid al-Mihdhar, one of the hijackers who crashed Flight 77 into the Pentagon on September 11, 2001.
If Darbi pleads guilty and co-operates with the US authorities, as Pakistani detainee Majid Khan did in February, his testimony could be useful in the trial against fellow Saudi prisoner Abd al-Rahim al-Nashiri.
Nashiri faces the death penalty for accusations he masterminded the MV Limburg attack and the 2000 attack against the USS Cole in Yemen that left 17 dead.
The five people accused of planning and executing the 9/11 attacks are being tried at the special tribunal as well.
Source: The Telegraph