MOSCOW, October 30. /TASS/. The floating dock where Russian aircraft carrier Admiral Kuznetsov was being upgraded, has sunk completely, a source in emergencies services told TASS on Tuesday.

"The floating dock has already sunk completely," the source said. It was earlier reported that the floating dock sank partially.

According to latest reports, four people were injured in the incident, one of them is in serious condition. The Admiral Kuznetsov was towed to another shipyard in Murmansk.

"Despite an emergency, the Admiral Kuznetsov was floated. The schedule for its repairs was not disrupted," spokesman for the Zvezdochka shipyard Yevgeny Gladyshev said.