Enron Japan Corp. and three other local group companies of failed U.S. energy giant Enron Corp. have been declared bankrupt by the Tokyo District Court, a private credit-research agency said Wednesday.

Enron Japan, Enron Japan Marketing Corp., Enron Japan Funding Corp. and E Power Corp. have liabilities totaling 5.791 trillion yen, said Teikoku Databank Ltd.

The bankruptcy declaration was made Dec. 12, two days after the four companies filed papers with the court.

The Enron group had been involved in projects to build a liquefied natural gas thermal electricity plant in Rokkasho, Aomori Prefecture; a coal-powered thermal power plant in Matsuyama, Ehime Prefecture; and coal-powered generation plants in Ube, Yamaguchi Prefecture, and Omuta, Fukuoka Prefecture.

The Houston-based energy giant filed for Chapter 11 bankruptcy procedures Dec. 2.