Oct 7 (Reuters) - The U.S. Federal Trade Commission's

case accusing Amazon ( AMZN ) of stifling competition in online

retail will move forward, though some of the states that sued

alongside the agency had their claims dismissed, court documents

showed.

U.S. District Judge John Chun in Seattle unsealed his ruling

from Sept. 30, which dismissed some of the claims brought by

attorneys general in New Jersey, Pennsylvania, Maryland and

Oklahoma.

Last year, the FTC alleged Amazon.com ( AMZN ), which has 1 billion

items in its online superstore, was using an algorithm that

pushed up prices U.S. households paid by more than $1 billion.

Amazon ( AMZN ) has said in court papers it stopped using the program in

2019.

The FTC has accused the online retailer of using

anti-competitive tactics to maintain dominance among online

superstores and marketplaces.

Amazon ( AMZN ) asked Chun to dismiss the case in December, saying

the FTC had raised no evidence of harm to consumers.

The judge said in his ruling that he cannot consider

Amazon's ( AMZN ) claims that its actions benefited competition at this

early stage in the case.