An Egyptian IS-affiliated terror group claimed responsibility for the crash of a Russian plane in Egypt's Sinai that took place earlier on Saturday and left no survivors, the group said in a statement on its Twitter account.

Romanian Prime Minister Victor Ponta on Saturday declared a three-day national mourning for the victims of the nightclub fire in downtown Bucharest late Friday.

Romanian General Prosecutor's Office announced Saturday to take over the case of the nightclub fire from the Bucharest local office, given the complex circumstances and the very serious consequences of the tragedy.

Health systems should use resources in the best way possible, economist specialized in the health sector, Nuria Mas, told Xinhua in an interview on the occasion of the 22nd Healthcare Industry Meeting, held this week in the IESE Business School in Barcelona.

Rescue teams have found at least 100 bodies in Egypt's Sinai Peninsula where a Russian airliner carrying 224 people crashed on Saturday, a security source told Xinhua.