An alleged Barrio Azteca leader is on trial for the killing of a U.S. Consulate employee and an El Paso County corrections officer.
Prosecutors accuse Arturo Gallegos-Castrellon of being a part of the March 13, 2010 ambush of Leslie Ann Enriquez and her husband, Arthur Redelfs.
On Monday, prosecutors called on a U.S. Border Patrol agent who runs the surveillance cameras at the Paso del Norte bridge. She was able to capture the car chase and shooting in Juarez.
An ABC-7 news manager saw the video as it was played for the court, but was not able to record images because media can't take equipment inside the federal courthouse.
The video shows the Redelfs' white SUV travelling along Juarez's border highway followed closely by a black car
The car drives up to the SUV and a man sitting outside the passenger side window fires -- almost point blank -- into the Redelfs' vehicle.
The Redelfs were found dead but their daughter survived the ambush.
The husband of another Consulate employee was also killed.
Gallegos-Castrellon is an alleged member of the Aztecas Gang and linked to a drug cartel.
He also faces drug trafficking and money laundering charges.
Gallegos-Castrellon made some serious allegations of his own when he was extradited from Mexico in 2012. He claimed he and his wife were tortured after his arrest in Juarez.
The defendant said the officers who tortured him were acting on behalf of the U.S. Government.
Gallegos-Castrellon has been behind bars at the El Paso County Jail since his extradition.
He is one of 35 defendants named in an indictment, 33 are in custody, six are awaiting extradition to the U.S. and and a total of 25 people have pleaded guilty.