KIEV, July 25 (Xinhua) -- The Ukrainian cabinet on Friday appointed Deputy Prime Minister Volodymyr Groysman as acting prime minister, one day after the incumbent, Arseny Yatsenyuk, announced resignation.
Groysman will serve as acting PM until the parliament elects a new interim head of the cabinet, the government's press service said.
According to the Ukrainian Constitution, only the parliament has the power to dismiss the prime minister by voting within 10 days after receiving a written resignation request.
The Ukrainian parliament's deputy speaker, Ruslan Koshulynsky, said that Yatsenyuk has not tendered the official resignation letter to the lawmakers as of Friday morning.
On Thursday, Yatsenyuk said he was stepping down over parliament's "ineffectiveness" after two political parties withdrew from Ukraine's ruling coalition.
Following the announcement, President Petro Poroshenko said there was no reason for Yatsenyuk and the rest of the cabinet to resign and asked the lawmakers to pass a vote of confidence in the government.