As American families cautiously celebrated the reported release of their loved ones from Iran, one has been “devastated” by the news that a former FBI agent was apparently “left behind.”

“We are happy for the other families. But once again, Bob Levinson has been left behind,” the Levinson family said on Facebook. “We are devastated.”

Family members said that Levinson was part of the discussion with the government of Iran that eventually freed five Americans in Iranian custody and also ended in the clemency for seven Iranians in the U.S., but the Iranians denied knowing where Levinson was.

Read the article “Robert Levinson: The American, Former FBI Agent, ‘Left Behind’ in Iranian Prisoner Release” on abcnews.go.com.