An attorney for the Laundrie family says an autopsy could not determine Brian Laundrie’s cause or manner of death.

Steven Bertolino says his remains are now headed to an anthropologist for further evaluation.

The autopsy results came Friday, just a day after it was determined that remains found at a Florida reserve were those of Laundrie.

“I received a call late afternoon that the cause and manner of death could not be determined and the body was being sent to an anthropologist for further evaluation,” Bertolino says.

According to experts, autopsies do not reveal cause of death only 5% of the time.

Dr. Lawrence Kobilinksy, professor emeritus at John Jay College of Criminal Justice, says investigators will now likely focus on Laundrie’s notebook.

He says that could also be difficult to analyze because it was found in a section of the Florida reserve that was previously underwater.

“A lot of people are looking forward to the investigation of that notebook because there may be very critical information there that investigators need to have,” Kobilinksy says. “However, if he used pen, like a ballpoint pen, there may be nothing there.”

A police spokesperson says the notebook is likely salvageable.

Bertolino also described Laundrie’s state of mind the day he left the family’s Florida home to head to the nature reserve.

“Brian left, he was very upset,” Bertolino says. “He was quite distressed and out of sorts, so to speak,” Betolino says.

The family previously said Laundrie went for a hike that day

However, News 12 legal analyst Jesse Weber says if it is determined that Laundrie’s parents deceived police the attention could turn to them.

“If at any point Brian Laundrie’s family misled or lied to law enforcement, that is obstruction of justice,” Weber says. “Outside of those circumstances, it was within their right to lawyer up, it was within their right not to speak to law enforcement.”

According to a forensic expert, the anthropologist could still determine a cause of death by looking at skeletal remains.

However, it is also possible that a cause of death is never found.