AT&T Inc is considering buying a 25 percent stake in India's Reliance Jio Infocomm Ltd, a telecommunications venture controlled by billionaire Mukesh Ambani, for $3.5 billion, the Times of India newspaper reported.

Such a deal would represent the largest foreign direct investment in India and would value the company at $14 billion, the report said.

A spokesman for AT&T declined to comment on the report.

Ambani, who controls conglomerate Reliance Industries Ltd , is India's richest man. The telecommunications venture aims to break even within three years of its launch, according to the report.

(Reporting By Susan Kelly; editing by Gunna Dickson)