For the second time this month, state-owned firms on Saturday slashed prices of petrol and diesel, in tune with the global softening of crude prices.

Petrol will now cost Rs 31.49 per litre in Delhi as against the prevailing Rs 32.49, while diesel has gone down from Rs 21.12 to Rs 20.12 per litre, official sources said.

In Mumbai petrol will cost Rs 36.43 as opposed to the prevailing Rs 37.52. The price of diesel has gone down by Rs 1.20 per litre to Rs 25.50.

In Kolkata petrol will cost Rs 33 per litre instead of Rs 34. Diesel price has declined from Rs 22.52 to Rs 21.51 per litre.

After over three months of surge in prices, the oil firms had on April 15 announced a Re 1 per litre cut in petrol and diesel prices.

The fortnightly price revision, which was slated to take place on April 30, was advanced as part of the government's deal with truckers earlier this week.