Warren Weinstein: A Look Back at the Life of the American Hostage Killed During Counterterrorism Operation

The White House said he was killed during an anti-al Qaeda operation.

His family said Weinstein "loved and respected the Pakistani people and their culture. He learned to speak Urdu and did everything he could to show his utmost and profound respect for the region."

Weinstein's wife, Elaine, released a statement that read: “On behalf of myself, our two daughters, our son-in-law, and two grandchildren, we are devastated by this news and the knowledge that my husband will never safely return home."

“I want to thank Congressman John Delaney, Senator Barbara Mikulski and Senator Ben Cardin -- as well as specific officials from the Federal Bureau of Investigation -- for their relentless efforts to free my husband," she said.

Elaine Weinstein added, “Unfortunately, the assistance we received from other elements of the U.S. Government was inconsistent and disappointing over the course of three and a half years. We hope that my husband’s death and the others who have faced similar tragedies in recent months will finally prompt the U.S. Government to take its responsibilities seriously and establish a coordinated and consistent approach to supporting hostages and their families.”

Weinstein's wife spoke to "Good Morning America" in December 2013 after seeing a video of her husband.

“I wanted to die right there on the spot,” Weinstein’s wife said at the time about her reaction to the video, “because he has no idea how hard we’ve tried to get him back… and it’s just heartbreaking because he’s asking for help and I can’t give him any.”

“I've done a lot of service for my country, and I would hope that my country will now look after me and take care of me and meet the demands of the mujahedeen,” he added.

ABC News' Mary Bruce and Lee Ferran contributed to this report.