Russian oil and gas multinational Gazprom told its Italian counterpart Eni that it would cut gas supply to the Rome-based company by around 15 percent from Wednesday, the Italian firm said.

"Eni confirms that Gazprom has announced a limited reduction in gas supplies for today, amounting to around 15 percent. The reasons for the decrease have not been notified at the moment. Eni is constantly monitoring the situation," a company spokesperson told AFP.