Thai officials have stopped a plane carrying 35 tons of weapons from North Korea after being tipped off by the United States. The crew members are from Kazakhstan and Belarus. They say they didn't know they were carrying the rocket-propelled grenades, missile and rocket launchers, and other weapons they happened to be hauling. The plane made an emergency landing in Bangkok, having planned to stop in Sri Lanka. "We were approached by the United States, seeking our cooperation to examine the suspected plane. It came from North Korea and was heading for somewhere in South Asia, probably Pakistan," an air force official told Reuters.