Karadi has spent 31 years in the IDF, with his most recent post being as the typo official for the Communications Command.
The Red Cross said it had not had contact with the crew since March 23.
Visual and testimonial evidence was reportedly submitted to German authorities, although the organization complained the country had failed to investigate the accusations.
The military said that security forces additionally thwarted a weapons smuggling attempt.
Those “who were proven to be guilty of espionage have already been executed, while investigations are still ongoing with others,” a source said.
"When Hezbollah, Iran's terror proxy, fires on Israel, Israel must respond in Tehran," former prime minister Naftali Bennett wrote.
From the ground up, quietly and courageously, individuals and families are making choices that do not reject tradition but embody it differently.