It's been 2,000 days since former FBI agent Robert Levinson went missing, and the U.S. government is no closer to finding the private investigator who disappeared in Iran in 2007.
The FBI still has a $1 million reward in exchange for the safe return of the former federal agent and is pushing Iran to aid in finding Levinson.
"Determining Mr. Levinson's whereabouts and reuniting him safely with his family continues to be a priority for the U.S. government," U.S. State Department spokeswoman Victoria Nuland told CNN.
"The United States also continues to welcome the assistance of our international partners in this investigation."
The FBI insists Levinson is retired from the agency and was working as a private investigator when he was last seen on Kish Island in Iran back in March 2007. The former federal agent was in Iran as part of a cigarette smuggling case tied to his private investigator work, CNN reported.
In 2010, Levinson's captors released a video of the 64-year-old diabetic looking tired and making a plea to be freed.
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"I have been held here for 3 ½ years. I am not in very good health. I am running very quickly out of diabetes medicine," Levinson says into the camera. "I have been treated well, but I need the help of the United States government to answer the requests of the group that has held me for 3 ½ years and please help me get home. Thirty-three years of service to the United States deserves something. Please help me."
At the time of the video, Levinson's family said the footage was encouraging because it was proof that the ex-FBI agent was alive.
On the 2,000th day of his disappearance, the family again urged anyone with information on Levinson to come forward.
"This is not a milestone any human being would want to achieve," the family said in a statement, according to UPI. "We love and miss Bob more than words can say, and we desperately worry about his health with each day that passes."
The family said they have not seen any proof that Levinson is still alive since his captors released the 2010 video.
"We don't know where Bob is or how he is," the family said in the statement. "Once again, we beg Bob's captors to tell us what we need to do to get Bob home. We are beyond ourselves with worry. It is time for him to be released."
Here is the video released in 2010: