William R. Hearst III has resigned his post as vice chairman of ExciteAtHome, officials from the bankrupt provider of high-speed Internet access said Friday.

Hearst, the former publisher of the San Francisco Examiner and the grandson of media baron William Randolph Hearst, did not specify his reasons for leaving the board, ExciteAtHome spokeswoman Stephanie Xavier said.

Hearst did not return a call for comment late Friday to his office at Kleiner Perkins Caufield & Byers, a Menlo Park venture capital firm.

Hearst was the original chief executive for At Home Corp., the cable-modem provider that acquired Web portal Excite Inc. for $6.7 billion in 1999.

ExciteAtHome's board has a reduced role in governing the company now that many of its operations must be approved in bankruptcy court.

Last month, four AT&T Corp. representatives, including chief executive Michael Armstrong, stepped down from the board to avoid possible conflicts of interest as AT&T pursues a $307 million bid for ExciteAtHome's cable network.