Sign suspected Libyan trial(Ahmed Abu Jatala, the alleged leader of the attack on the U.S. consulate in Benghazi, Libya in September 2012)

In an audience of just 10 minutes in a federal court in Washington, Jatala heard the three charges against him and pleaded not guilty to the charges.

Ahmed Abu Jatala, the alleged leader of the attack on the U.S. consulate in Benghazi, Libya in September 2012, came to Washington yesterday to stand trial on charges that could gain from the death penalty, official sources reported several U.S. media.

After 10 days of travel to the United States on a Navy ship, Jatala arrived in the U.S. capital amid tight security and was taken to court in the federal court for the District of Columbia, where he faces the trial for the attack, in which four Americans were killed.

The suspect was transferred to Washington in a helicopter, in the custody of the U.S. authorities captured him earlier this month in Benghazi during a joint operation by U.S. special forces and the FBI.

Jatala, an alleged regional leader of the Islamic terrorist group Ansar al Sharia, was questioned before aboard the Navy ship by U.S. officials say has "cooperated" with authorities, according to the New York Times reported.

The alleged attacker was charged last year by the Department of Justice to three charges, including killing a person during an attack on U.S. federal facilities, a crime for which capital punishment may be applied. 

The authorities have not yet provided information about when hearings begin in the trial of Jatala, whom the U.S. government has refused to move to the prison for terrorism suspects at Guantanamo (Cuba) despite requests from many Republicans . 

In the attack of September 11, 2012 Benghazi consulate killed several Libyans, the U.S. ambassador to Libya, Chris Stevens, in charge of security of the State Department Sean Smith; and two CIA employees, Tyrone Woods and Glen Doherty. 

President Barack Obama, called Jatala as "one of the alleged brains" behind the armed attack on the complex consular Benghazi and said that he would fall on "the full weight of the justice system." 

The Justice Department has left open the possibility of adding more charges against Jatala, whose arrest occurred at home in one operation without casualties. 

In an interview last August from Benghazi, said Jatala U.S. accusations against "are false and there is no trace of them in truth." 

The attack, which occurred on the eleventh anniversary of the attacks of September 11, 2001, has become a political tool for Republicans who still question Obama's response to the fact.