Investigators in the Netherlands — who have not visited the crash site — released a preliminary report Tuesday that left unanswered key questions about what exactly happened.

CCTV America’s Kate Parkinson reports.

Dutch Safety Board releases preliminary report for MH17

There are still many questions about the downing of Malaysia airlines flight 17 nearly three months ago. Dutch investigators just released a preliminary report about the crash that killed 298 people. CCTV's Kate Parkinson reports.

The report’s key conclusion is that the plane had no mechanical or other technical problem in the seconds before it broke up in midair likely after being struck by multiple “high-energy objects from outside the aircraft.”

Evidence of the July 17 aviation disaster that killed all 298 people on board the jet remained exposed to the elements. Charred personal belongings lay amid wreckage of Malaysia Airlines Flight 17 that was still strewn across fields of Eastern Ukraine more than seven weeks after the jet was shot down.

Chunks of fuselage carrying the Malaysian carrier’s logo were lying alongside a pro-Russian rebel roadblock while books, magazines, a child’s shoe, and a burned page from a Tagalog language manual lay nearby.

The slow pace of the investigation, its cautious preliminary conclusion and the fact that wreckage and human remains are still lying in Ukraine has frustrated and angered families grieving for passengers who died.

“I have no words for it, I am speechless,” said Samira Calehr, a Dutch mother who lost two sons, Miguel, 11, and Shaka, 19, in the crash.

Article includes reporting by The Associated Press