The five countries investigating last year's shooting down of a Malaysia Airlines plane over Ukraine are calling for an international tribunal to prosecute those responsible.

Australia's Foreign Minister Julie Bishop said Thursday that her government is committed to working with Malaysia, Ukraine, Netherlands, Belgium, "and the broader international community to secure justice for the families of the victims."

Ukraine and the West suspect Flight MH17 was destroyed by a Russian surface-to-air missile fired by Russian forces or separatist rebels fighting in eastern Ukraine. The Russian maker of the Buk air defense missile system reported this month that the aircraft was downed by an older version of the missile that is not used by the Russian military but is in Ukrainian arsenals.

The crash on July 17, 2014, killed 298 people.