NBA commissioner David Stern fired back against accusations from former SuperSonics owner Howard Schultz on Friday, claiming that he never made threatening remarks to the executive, according to The Associated Press.

Schultz, who owned the Sonics until July 2006, claimed in a court filing last week that Stern told him during a conversation that the effort would become "very expensive" for Schultz and his partners if he did not enter a settlement with the city.

"At no time during the conversation did I threaten Mr. Schultz in any way -- either expressly or implicitly -- regarding his continuation of this lawsuit or any other matter," Stern wrote in the document filed Friday.