Former MGM Resorts CEO Terry Lanni dies

Under his tenure, MGM Mirage grew from a one-casino operation to owning the most casinos on the Las Vegas Strip, including the Bellagio, Mandalay Bay and MGM Grand. He is survived by his wife, Debbie, sons Sean and Patrick, as well as siblings. In a family statement, his wife and sons said Lanni's death was peaceful, and came as he was surrounded by his family.

"So many have shared with us stories of the ways in which Terry touched their lives. He was a very humble man and would have found all the attention embarrassing," the statement said. "Nonetheless, we are all proud of the positive impact he had on so many people's lives and will forever seek ways in which to honor his memory."

Jim Murren, Lanni's successor at MGM Resorts and the company's COO while Lanni led, said Lanni will be remembered for his leadership on diversity in the casino industry and his philanthropic efforts.

"Even as he faced these last months of his life, he did so with typical grace, courage and strength," Murren told employees in a companywide note. "Like anyone who knew him, we can all learn to be better people by emulating his values personally and professionally."

Kirk Kerkorian, the company's top investor, called Lanni a trusted friend and invaluable colleague. "There is virtually no one that I've respected more than Terry Lanni," the billionaire investor said.

Memorials are planned in Las Vegas and Pasadena.