Industrial and commercial authorities have launched a probe into Nikon China after the company was accused by China Central Television of selling defective products.

Many consumers have complained of dust buildup on the image sensor of the Nikon D600 camera, CCTV said on its annual 3/15 Gala news program on Saturday.

The program exposes business misconduct and defends consumers' rights. It has been broadcast by CCTV annually on March 15, World Consumer Rights Day, since 1991.