UPDATE 1-Mexico's Slim buys AT&T's America Movil stake for $5.57 bln
June 30, 2014 at 17:05 PM EDT
MEXICO CITY, June 30 (Reuters) - AT&T Inc said on Monday it had sold its equity in America Movil for $5.57 billion to a company controlled by Carlos Slim, allowing the billionaire to tighten his grip on the giant Mexican telecoms company.