European Union foreign policy chief Federica Mogherini on Tuesday said states that are in a position to assist with the investigation and prosecution of those responsible must fully cooperate with the ongoing criminal investigation into the downing of flight MH17.

She made the remarks after the Dutch Safety Board earlier Tuesday presented a report on the downing of the flight on July 17, 2014.

"The report concludes that MH17 was hit by a so-called BUK-missile, and explicitly rules out other options. Moreover, the report defines a 320 square km area in eastern Ukraine from where the missile was launched. Thus, it puts an end to 15 months of speculation over a number of key facts related to the crash," said Mogherini in a statement.

"The EU reiterates its full support to the work of the Joint Investigation Team and to the ongoing efforts to establish an effective prosecution mechanism to ensure that the perpetrators of the downing of the flight MH17 are identified and brought to justice," she said.

Mogherini noted that United Nations Security Council resolution 2166 stipulated that those directly or indirectly responsible for the downing of MH17 must be held accountable and brought to justice. To this end, a criminal investigation has been launched by the Joint Investigation Team.