The communications and Internet service industries said Thursday they will provide police with information on people who try to arrange suicides over the Internet.

Guidelines on the disclosure of personal information, including names and addresses, have been compiled by four industry groups.

The guidelines, released the same day, state that an individual's personal information should be given to police when a suicide attempt is believed imminent because a message specifies it or the author shows a strong determination to carry out the deed.

Communications and Internet service providers are obliged to protect customer confidentiality, but they have agreed to disclose the personal data due to a sharp increase in the number of group suicides committed by people who used Web sites to meet.

The Ministry of Internal Affairs and Communications and the National Police Agency helped prepare the guide.

The industries will hear opinions from the public in September and begin following the guidelines in October.