Inflation rose to 5.91 per cent during the week ended April 23 as vegetables, fruits, edible oil, industrial fuel and manufactured products became costlier.
After hardening to 5.64 per cent during the week ended April 16, the wholesale price index based inflation rose further despite efforts by the Reserve Bank of India and government to keep prices stable.
Inflation was at 4.32 per cent during the same period last year.