"CNG rates hiked in Delhi. Isn't the time suspect?," Kejriwal tweeted.
CNG or compressed natural gas price in the city was today hiked by Rs 4.50 per kg.
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Also, the price of cooking gas piped to kitchens has been increased by Rs 5.15 per kg with effect from midnight tonight.
CNG will cost Rs 50.10 per kg in Delhi and Rs 56.70 per kg in Noida, Greater Noida and Ghaziabad from midnight tonight, Indraprastha Gas Ltd (IGL) said.
The price of piped natural gas (PNG) to the households in Delhi is being revised from Rs 27.50 per standard cubic metre to Rs 29.50 per scm up to consumption of 30 scm in two months.
CNG price was last revised in September when it was hiked by a hefty Rs 3.70 per kg.