Russian investigators failed to prove a Ukrainian missile brought down a Russian passenger jet plane in October 2001, a Ukrainian court in Kiev said Tuesday, upholding an earlier ruling.

Four Israeli families had filed a lawsuit seeking compensation after the crash of the Tu-154 jet belonging to Sibir airlines, now called S7, while it was flying from Tel Aviv to the Siberian city of Novosibirsk. The plane went down in the Black Sea, killing all 66 passengers and 12 crew members.

Investigators from the Interstate Aviation Committee, or IAC, an air safety group linking 12 ex-Soviet republics, later determined that the plane had been unintentionally shot down by a missile fired by Ukrainian forces during military exercises on the Crimean Peninsula.