A Thai court has ordered the crew of a cargo plane transporting weapons from North Korea to remain in jail for 12 more days.

The five crew members, consisting of one Belarus national and four Kazakh nationals, were arrested in mid-December after their cargo plane was seized during a stop in Bangkok. 

The plane was carrying 35 tons of heavy weapons, including explosives and rocket-propelled grenades.  A lawyer for the crew members says they believed they were transporting oil drilling equipment.

The destination of the shipment is not clear.

The United Nations imposed sanctions in June banning North Korea from exporting any weapons, in response to Pyongyong's testing of nuclear and missile weapons.

Some information for this report was provided by AP and AFP.