However , the photograph turned out to be a hoax .
A July 1991 Newsweek cover photograph purported to show three American POWs still being held against their will , which increased general public interest in the issue .
The photograph turned out to be a hoax .
A July 1991 Newsweek cover photograph purported to show three American POWs still being held against their will , which increased general public interest in the issue .