A suspected hacker posted more illegally obtained information on two South Korean nuclear reactors Tuesday, reasserting demands that they be suspended.

The new posting on Twitter dated around 3 p.m. included four files of reactor-related information including what appeared to be diagrams of the facilities.

The sensitivity of the information could not be immediately confirmed.

It was the fifth leak of information on the Gori and Wolsong nuclear power plants in just over a week. Previous postings included the personal information of some 10,000 employees at the state-run nuclear power plant operator, Korea Hydro & Nuclear Power Co. (Yonhap)