South Korea ? One video recorder, six tapes, a digital camera and a stone. North Korea laid out its evidence Tuesday against two American journalists sentenced to hard labor for entering the country illegally.

The country’s official news agency reported that the journalists, Laura Ling and Euna Lee, documented their journey into communist North Korea, even pocketing a stone to commemorate the illicit trip across the frozen Tumen River from China.

“We’ve just entered a North Korean courtyard without permission,” the Korean translation of their videotape narration said, according to Korean Central News Agency.

Ling, 32, and Lee, 36, who work for former Vice President Al Gore’s California-based Current TV media group, were sentenced last week to 12 years of hard labor in a North Korean prison for illegal entry and “hostile acts.”

Before Tuesday’s report, little was known publicly about the journalists’ arrest March 17.