British supermarket giant Tesco has announced a 45 million US dollars (£27.4 million) deal with a US firm to manage its IT network.

New York-state based firm CA Technologies will monitor the IT network for Tesco Group, including Tesco Bank, Tesco.com and Tesco Mobile.

The company will deal with a wide range of IT work from health and performance of its supply chain, including desktop computers, servers, networks, credit card transactions, suppliers and supply orders.

CA Technologies has 472,000 staff working in more than 5,000 stores across 14 countries.

Mike McNamara, Tesco's chief information officer, said: "Our systems infrastructure needs to work for our IT team in order to do their job for our customers, our colleagues and our suppliers."