It seems to be a dramatic result of the hostilities in the Ukraine and pro-Russian separatists are supposed to be at the origin of this dramatic incident. The crash of the plane was probably produced by a Russian-made antiaircraft system controlled by the rebels. Malaysia’s prime minister, Najib Razak, said in a Twitter post that he was “shocked by reports that an MH plane crashed.” He promised an immediate investigation. Ukraine’s president, Petro O. Poroshenko, asked the same. The plane had been flying at about 33,000 feet when radar lost track of it. The White House press secretary, said that the President Obama had been briefed about the plane crash by the President Vladimir V. Putin of Russia. They spoke by telephone. Information about the responsibility are presented different at this moment by various sources .The insurgent group in eastern Ukraine denied that the rebels had anything to do with the loss of the passenger jet. Other news source affirms that they assumed responsibility. Ukrainian Armed forces and Russian military officials denied their involvement in bringing down the plane. Another unknown part could be involved. Russian President Vladimir Putin has expressed his “deep condolences” to Malaysia’s Prime Minister.