New York ? The husband of U.S. Rep. Carolyn Maloney has died on a mountain climbing expedition in the Himalayas, aides to the congresswoman said Saturday.

Clifton Maloney, a millionaire investment banker and avid climber, was resting in a high-altitude camp after a successful ascent to the summit of the world’s sixth-highest mountain when he died.

He was 71, a late age for such a grueling endeavor, but had been in excellent health, aides said.

“I am told that his last words were, ‘I am the happiest man in the world. I just climbed a beautiful mountain,”‘ said Barry Nolan, a congressional aide who works with Carolyn Maloney.