India's central bank has raised interest rates for the second time this month. The Reserve Bank of India (RBI) increased the rate at which it lends to banks to 5.75% from 5.5%.

The moves are designed to contain stubbornly high inflation. Indian inflation has been in double figures for five months and is expected to stay there for a sixth, with wholesale price inflation forecast by the government's chief statistician to rise to 11% in July from 10.55% in June.

Rising prices - particularly in food and fuel - have provoked public protests in India and become a matter of political concern. Food costs have been growing since last year, when the worst drought in 37 years hit farm output.

The government moved to raise fuel prices in June, which prompted the opposition to call a one-day nationwide strike this month.

The RBI said in a statement that controlling inflation was now more important than securing economic growth, which is forecast at 8.5% for the year to March 2011.

The rate rise was the fourth this year and analysts think that there could be more in store.