LOS ANGELES -- Twenty-eight counterfeit NBA championship rings have been seized by federal authorities at Los Angeles International Airport.

U.S. Customs and Border Protection said Wednesday that the rings were in a wooden box shipped from China, with a final destination in Arizona.

Investigators suspect the intent was to sell the phony rings as a collection.

Inspectors confirmed the rings were fake and in violation of trademarks for the NBA and several teams, including the Los Angeles Lakers, Golden State Warriors and San Antonio Spurs.

No arrests were immediately announced.

Officials said that if the rings were real, the collection could be worth more than $550,000.