The U.S. has arrested a person suspected of playing a role in the 2012 attack on its consulate in Benghazi, Libya. Attorney General Pam Bondi said on Friday.

Bondi said Zubayar al-Bakoush has been extradited to the United States and will face murder, arson and terrorism related charges.

“The FBI has arrested one of the key participants behind the Benghazi attack. Zubayar al-Bakoush landed at Andrews Air Force Base at 3 a.m. this morning. He is in our custody,” Bondi said at a news conference.

Four U.S. personnel were killed in the September 11, 2012, incident, which was initially thought to be a spontaneous reaction to protests but was later identified as a deliberate attack carried out by extremists, some of whom were linked to groups affiliated with al Qaeda.

Two other people have been arrested and sentenced for playing a role in the attack.

The attack became a symbol of the chaos in Benghazi and Libya as a whole, highlighting the instability and the presence of terrorism in the region. It led to a series of investigations in the United States, in which congressional Republicans clashed with then-Secretary of State Hillary Clinton ahead of her 2016 presidential run as a Democrat.

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(Reporting by Andrew Goudsward, Jana Winter and Katharine Jackson; editing by Andy Sullivan and Scott Malone)