The report clearly indicated serious head injuries and broken ribs and the conclusion is made that the injuries were sustained by a heavy blow to the body.
Police however believe that the injuries were greater than that which could be expected from a collision with a car travelling at low speed in a quiet residential area, and are thus working on the theory that the girl was removed from the scene alive and killed at a later juncture.
Police confirmed on Thursday that the autopsy report had revealed no indication that the teenager was subjected to sexual assault.
According to a report in the Dagbladet daily, police have found a link between the garage where two suspects were arrested and the location where the girl was found in the woods.
The link is reported to be an "everyday item" which is expected to play a key role in the case against the men.
The two men, a 37-year-old from Ålesund and a 64-year-old from Vestby, were on Thursday remanded into custody for a further four weeks.
The court concluded that there are good grounds on which to suspect the 37-year-old for the killing, and that he can be shown to be linked to both the area where the 16-year-old went missing and the location she was found.
The 37-year-old's lawyer, John Christian Elden, however said on Thursday that the girl's death was probably an accident.
"What I can say is that I did not contest in court that that there is reasonable cause to suspect manslaughter," Elden said to TV2.
Both men deny the charges against them, claiming that they have alibis for the time she is believed to have gone missing.
Sigrid Giskegjerde Schetne disappeared on her way home from a friend's house at around midnight on Saturday August 4th, prompting a massive police and public search.