ACE has named John Keogh as new chief executive of ACE Overseas General, the company's international property and casualty insurance organisation.

Keogh joins ACE from AIG, where he served for more than 20 years, most recently as senior vice president, domestic general insurance, and president and CEO of National Union Fire Insurance Company. Keogh joined AIG in 1986, and he has served in a number of senior positions there, including as president and COO of AIG's Lexington Insurance Company unit.

Keogh succeeds Gary Schmalzriedt, who will remain as chairman of ACE Overseas General until 1 October, when he will retire.

"We welcome John to the ACE organisation," said Evan Greenberg, president and CEO of ACE Limited. "John brings substantial management and underwriting expertise gained through his many years in the industry. We have a strong, internationally experienced management team globally that will complement John's leadership skills."

He added, "On behalf of all my ACE colleagues and our board of directors, I want to extend our sincere appreciation to Gary Schmalzriedt, who helped ACE become the successful company it is today. Gary is a highly experienced insurance professional and trusted executive, whose wisdom and character have contributed greatly to the foundation of our company."