July 20th, 2014
12:46 AM ET

Source: Missile system transported back to Russia

U.S. officials telling CNN they believe a Buk missile system, a surface-to-air weapon, was smuggled into Ukraine prior to Flight 17 being shot down.

Those officials say they believe it was moved back to Russia after the attack. The implication is that Russia is trying to tamper with evidence.

CNN's Elise Labott has the latest.

Filed under: International • MH17 plane crash • News