But U.S. authorities were on the hunt for Cheibani in connection with the shooting death of William Bultemeier, a Department of Defense attache, back in 2000.
In September, officials in federal court in Brooklyn unsealed an indictment against Cheibani, whose real name is Alhassane Ould Mohamed, for allegedly murdering an internationally protected person.
The attack occurred on Dec. 22, 2000, just before Bultemeier was to return home to North Carolina. He had gone out to dinner at a restaurant called La Cloche with Marine Staff Sgt. Christopher McNeely and other embassy employees. Bultemeier was driving a Toyota Land Cruiser with diplomatic license plates.
As Bultemeier left the restaurant shortly after midnight, he was accosted by Cheibani and another unidentified man armed with a pistol and an AK-47 assault rifle, the indictment said.
Cheibani allegedly demanded the keys to the SUV before shooting Bultemeier in the chest with the pistol. When McNeely tried to intervene, the second man used the AK-47 to shoot both victims, the indictment says.
After Cheibani pulled the keys from Bultemeier's pocket, both men drove away in the SUV. McNeely survived the attack "but suffered lasting injuries," the indictment says.
Cheibani was arrested in Mali two days after the killing, remaining in custody there until he escaped in 2002.
In late 2009, Cheibani was arrested again in Mali in the killings of the four Saudi Arabian nationals in northern Niger. He was sent back to Niger where he was tried and convicted, only to escape during the Niamey prison attack in June.
U.S. authorities were offering a $20,000 reward for information leading to his capture.