Eleven years after his acquittal in the California deaths of his ex-wife and her friend, O.J. Simpson describes in a book how he "hypothetically" killed them.

Relatives of Nicole Brown and Ronald Goldman, victims of the headline-grabbing 1994 double murder, expressed frustration that Simpson might profit from the crime, despite his acquittal, The Times of London said Sunday.

Simpson is reportedly being paid $3.5 million for an autobiography in which he discussed his involvement in the murders in hypothetical terms, the Times said.

Details of the book were published in the National Enquirer on the same day that Goldman's father attempted to seize a portion of Simpson's assets as a partial payment of a $33.5 million judgment against the former NFL star after he lost a 1997 civil case, the Times said.

The published account couldn't be verified, but the newspaper provided details of Simpson's account of events, the Times said.

According to the Enquirer, "Simpson prefaces these key pages by ... claiming that this part of the book is 'hypothetical'," the Times said.