Relatives of marines missing after a South Korean military ship sank near the disputed sea border with North Korea are protesting over a lack of information about what caused the disaster.

About 150 family members at Pyeongtaek naval base south of Seoul pushed their way past security guards on Saturday to confront military officials. Screaming “Liars!” some climbed onto the rescued captain’s car as he was driving away.

The Joint Chiefs of Staffs say an explosion occurred in the rear of the ship but the cause of the blast has not been released. Fifty-eight marines were rescued but 46 others are missing.

Relatives say rescued crew members told them the ship was leaky and in need of repair.

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