ICE agent's family files wrongful death claim against Justice Dept.
In an interview last November, Zapata's family told CBS News they feel that U.S. law enforcement could have stopped the sale of a gun used to kill their son. CBS News obtained law enforcement records that show the gun that killed Zapata came from the U.S., and the suspects who allegedly trafficked it had been under law enforcement's watch for months in Dallas but weren't arrested.
In February, CBS News learned a second weapon used in the Zapata attack was also linked to an ongoing case under the Bureau of Alcohol, Tobacco and Firearms.
The Justice Department has said ATF "was not aware of" the suspect's purchase of the gun that killed Zapata when it happened, and that answering further questions would jeopardize the investigation.
Related: Second gun used in ICE agent murder linked to ATF undercover operation
Murdered U.S. agent's family wants answers
- Did Obama admin. know of IRS targeting during campaign?
- 16-year-old finds a new way to detect cancer
- 5/19: Surviving the Midwest twisters; How a $4.8 million winning ticket saved a family
- Lotto winners with tragic story thank "guardian angel"
- Thunderstorm supercells threaten Midwest
- WH Benghazi emails have different quotes than earlier reported
- 5/18: NTSB investigates train collision; teen tackles cancer diagnosis
- Young Innovators: Teen tackles cancer diagnosis
- Conn. train collision a major headache for commuters
- 50th anniversary of Medgar Evers' broadcasting milestone
- The power of a uniquely American song
- Long Island college student accidentally killed by police
- Katie: The True Story Behind "The Last King"
- Lucky lotto: How a $4.8 million winning ticket saved a family
- 8-year-old fights to get WWII vet recognition he deserves
- Small Fla. town waits for Powerball winner to come forward