Just four of the 298 people on board Malaysian Airways flight MH17, brought down by a missile over eastern Ukraine in July, remain unidentified, the Dutch justice ministry said on Thursday.

All four who have yet to be named are Dutch, the ministry said. This week two more victims were formally identified, including the last of the foreign nationals who died in the crash.

The victims came from 10 different countries but were predominantly Dutch.

The last coffins bringing human remains back from the crash site arrived in the Netherlands at the end of last month. And a convoy of lorries bringing back wreckage of the plane for forensic examination arrived in the Netherlands this week.

Meanwhile, the Netherlands has rejected calls from relatives of some of the plane’s passengers for the UN to replace Dutch experts at the centre of the investigation into the crash.

A law firm that represents 20 relatives from Belgium, Germany, the Netherlands and the US filed a written request for ‘the UN to appoint a special envoy to take over’ the inquiries, Reuters reported. They accuse the Netherlands of ‘completely botching’ the investigation so far.

The Netherlands pointed out 11 countries have so been involved in the investigation, including Malaysia, Ukraine and Russia.