The United States believes that Iran mistakenly shot down the Ukrainian airliner in which 176 people were killed, CNN reported on Thursday citing several officials.President Donald Trump has indicated the plane crash was not due to mechanical issues, adding that "somebody could have made a mistake on the other side.""Well, I have my suspicions," said Trump when asked what he thought happened to the plane."I don't want to say that because other people have their suspicions," Trump said, but added, "Somebody could have made a mistake on the other side ... not our system. It has nothing to do with us."The Boeing 737 jet operated by Ukraine International Airlines took off early Wednesday from Tehran for Ukrainian capital Kiev. Minutes after taking off it disappeared from radar.Eighty-two Iranians, 63 Canadians, and 11 Ukrainians died in the crash, which took place between the cities of Parand and Shahriar.There were also 10 Swedes, four Afghans, three Germans and three British nationals ..