Scott Moore announced Tuesday he is leaving his job as executive director of CBC Sports and general manager of the CBC Revenue Group.

"This has been a difficult decision,'' Moore said in a release. "I'll always be proud of this place and what it does.''

Moore did not give a reason for his departure.

Kirstine Stewart, interim executive vice-president of CBC English Services, said Moore's tenure covered "an eventful period in the Canadian broadcasting industry."

"He has left CBC Sports and our revenue group well-positioned to build on their existing strengths," Stewart said in a release.

Moore's departure follows several other major moves in the Canadian broadcast industry.

In early August, Richard Stursberg, the head of CBC's English Services, suddenly left the public broadcaster. That resulted in Stewart moving into the job.

Later in August, former CTV executive Keith Pelley was appointed to head up Rogers Communication Inc.'s media division, the wing of the company that includes Rogers' broadcasting and digital media assets, plus the Toronto Blue Jays.

Pelley was executive vice-president of strategic planning at CTV and president of Canada's Olympic broadcast media consortium.

Stewart said David Masse will take over CBC Sports on an interim basis. Jack Tomik will lead the CBC Revenue Group, which is responsible for marketing, sales and business development.

Masse is a CBC Sports veteran and helped plan the broadcaster's award-winning coverage of the 2008 Summer Olympics in Beijing. He also oversaw CBC's coverage of the 2010 FIFA World Cup.

Tomik is a well-known industry professional who specializes in brand, sales and marketing. He has worked closely with CBC in recent years.

Moore, an award-winning producer, joined CBC in March 2007. He previously had headed up Rogers Sportsnet.

He took over from Nancy Lee, who left the CBC to lead the host broadcast team for the 2010 Olympics in Vancouver.

Moore left Sportsnet in July 2003 and worked with his own independent production company. He was involved in the coverage of the 2004 Athens Summer Olympics, 2006 Turin Winter Games and Melbourne Commonwealth Games.