ATLANTA – Gary Betty, chief executive officer of EarthLink, has cancer and has taken a leave of absence from the company.

EarthLink, a national Internet service provider, described Getty as having a “serious form of cancer” and said the disease “will require him to take an undetermined leave of absence from the company.”

Mike Lunsford, executive vice president of voice and access for EarthLink, will replace Betty on an interim basis. The company’s board named Lunsford to the post.

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