BEIJING (AP) _ China has shut down more than 100 channels used by paging services after their transmissions interrupted communications signals for planes and ships and nearly caused accidents.

China is the world's biggest user of wireless paging and the service's rapid growth has interrupted aviation and navigation communications, the Xinhua News Agency quoted an Information Industry Vice Minister Zhang Chunjiang as saying in a report Thursday.

``In some cases, the interruption almost caused serious accidents,'' Zhang was quoted as saying. The report did not cite any specific examples.

China's paging industry has 389 registered channels using 51,827 base stations, Xinhua said.

Closing more than 100 paging channels has reduced interference, Zhang said, adding that the problem is yet to be totally resolved.

Since July, the ministry has asked all paging companies to reregister to allow authorities to create a data bank of all mainland operators, Xinhua said. It added that the data bank will help authorities track down unregistered operators and shut down signals causing interruption to vital communications.