Nine months after the investigation into the destruction of MH17 started, there have been no answers and no justice for the victims - but an investigation by 60 Minutes has shed more light on one of the cruellest acts of mass murder in recent memory.

Reporter Michael Usher travelled to Ukraine and visited the site where the plane crashed into the earth, killing all 298 people on board including 38 Australians.

He said the culprits "left enough footprints" to follow.

Usher and the 60 Minutes crew worked on tracking the missile launcher believed to have shot the passenger plane out of the sky on July 17 last year, following it to all the locations it had been publicly seen since that day.

"It's been nine months but there are no answers and, seemingly, no justice," Usher said.

Usher and his team moved from regions controlled by Ukraine's government across no-mans-land and to the so-called Donetsk People's Republic, where Russian-backed rebel separatists are in command.

He said the team had a great deal of difficulty crossing into rebel territory, where they were suspected of being spies.

"They don't want any attention at all," he said.

The rebels are the prime suspects for the destruction of the plane, however, the rebels in turn claim the plane could have been shot down by Ukrainian forces in a "false flag" plot.

"Politically, this is one of the most sensitive investigations in history," Usher said.

"There are too many conspiracy theories and wild propaganda coming out of the Kremlin."

Michael User in Ukraine. (60 Minutes)

38 Australians were among the 298 killed. (AAP)

Michael Usher and his crew traveled to the Ukraine to track the culprits. (60 Minutes)