MEXICO CITY, July 16 (Reuters) - The first exchange-traded funds that track Mexico's government bonds and T-bills began trading on Thursday in a sign of increased investor demand for Mexican debt, Mexican stock market officials said.

iShares began selling the five bond and T-bill ETFs on Mexico's stock exchange in a listing worth 911 million pesos ($67 million), said officials at a stock exchange event.

iShares, the world's biggest ETF provider, previously launched funds that track Mexican stocks and corporate debt.

Last month, U.S. fund manager BlackRock <BLK.N> agreed to buy Barclays' Global Investors business, which includes the iShares business. ($1 = 13.59 pesos) (Reporting by Michael O'Boyle in Mexico City, with additional reporting by Ellis Mnyandu in New York, editing by W Simon) Keywords: MARKETS MEXICO/ETF