Two Sonics and Storm season-ticket holders plan to file a lawsuit today, accusing the new team owners of defrauding ticket buyers who believed assurances that they intended to keep the teams in Seattle.

The lawsuit seeks class-action status on behalf of everyone who purchased season tickets between July 2006, when Clay Bennett led a group of Oklahoma City businessmen in purchasing the team, and Sept. 21, when Bennett filed a demand for arbitration to escape the final two years of the team's KeyArena lease.

It accuses Bennett's ownership group, The Professional Basketball Club, of breach of contract, negligent misrepresentation and violation of Washington's Consumer Protection Act, according to a draft of the complaint to be filed today in King County Superior Court.

A spokesman for the owners, Daniel Mahoney, said "We choose not to comment" on the suit.