[Updated at 6:04 p.m.] Read the full CNN.com story

[Updated at 3:03 p.m.] MLB Commissioner Bud Selig issued the following statement regarding McGregor's death:

“On behalf of Major League Baseball, I am very saddened by the sudden and unexpected passing of Keli McGregor. As President of the Colorado Rockies, Keli was one of our game’s rising young stars. He was a great athlete and equally great as a baseball administrator. Also, he was a great human being. All of baseball will miss him. I offer my condolences and deepest sympathies to his family, friends and the Rockies ball club.”

[Updated at 2:02 p.m.] The Colorado Rockies released a statement saying the team's president, Keli McGregor, was in Utah on a business trip with team chairman & CEO Charlie Monfort and executive vice president Greg Feasel when he died. The team said it had no more details on the circumstances surrounding his death.

“Words cannot describe the level of shock and disbelief that we all are feeling this morning at the loss of Keli,” Monfort said. “Our thoughts, our prayers are with Lori and the entire family as we all try to cope and understand how such a tragic loss could occur with such a wonderful man.”

[Posted at 1:21 p.m.] Keli McGregor, president of the Colorado Rockies baseball team, was found dead in his hotel Tuesday morning.

Police received a call before 9 a.m. that a man had been found unconscious at the Grand America hotel in downtown Salt Lake City, Utah, police spokesman Detective Rick Wall told CNN.

Wall said paramedics and and fire officials responded to the hotel but were unable to revive McGregor. He said the cause of death was not known.

Officials told CNN affiliate KMGH that the cause of his death is under investigation but McGregor's appeared to be from natural causes, possibly a heart attack. McGregor was found alone and there were no obvious signs of foul play, KMGH reported.

McGregor, 48, has been the team's president since October 2001 and had been with the organization for 15 years, according to the team's website.

The Rockies website says McGregor was raised in Colorado and joined the Rockies organization after he worked for four years as an athletic director at the University of Arkansas.