The situation in North Korea for Lisa Ling's sister and another journalist is becoming worse, reports People magazine.

Preparations for an indictment are already underway, with Laura Ling and Euna Lee headed for a trial on the basis of "already confirmed suspicions," according to the state-run Korean Central News Agency.

"The illegal entry of U.S. reporters into the DPRK and their suspected hostile acts have been confirmed by evidence and their statements," the news agency said.

Ling and Lee, who work for former Vice President Al Gore's media venture Current TV, were captured by a North Korean military patrol on March 17 near the North Korea/China border. The journalists were in China filming a documentary on North Korean defectors who reside there.