BELLINGHAM, Wash. -- A Bellingham man has been swept up in an international investigation of a child pornography ring. 

Twenty-eight-year-old Nicholas King pleaded guilty to charges and is awaiting sentencing, according to the Bellingham Herald. 

Seven other American men have been convicted and sentenced on numerous charges. 

Investigators say more than 20 suspects have been arrested in nine states, and more are being sought in the U.S., Sweden, Serbia, the Netherlands and the U.K.

The ring has been producing and distributing pornographic images of infants and toddlers over the internet.