Panamanian authorities say they have discovered more containers holding suspected arms on a North Korean ship that had come from Cuba.
They are calling on the UN to investigate the case.
Panama seized the ship last week after a tense stand off with the crew in which the captain tried to slit his own throat.
Authorities discovered suspected arms on board which Cuba said were weapons being sent back to North Korea for repair.
Panama has detained the 35 crew members on board -- who will face charges of crimes against Panama's internal security.
