The Quoirin family has urged Malaysian authorities not to close the case into the disappearance and death of their daughter, Nóra.
It comes after lawyers for the family became concerned about a lack of updates on the status of the investigation.
Efforts by the Quoirin family to seek clarity from police have failed since the family left the country in August, according to their lawyer in Malaysia.
Nóra vanished from a holiday resort in the country at the time. The 15-year-old's body was found following ten days of intense searches involving hundreds of search and rescue workers.
Sankara Nair told RTÉ News that authorities have not replied to his request for information since Nóra's body was repatriated back to the UK four months ago.
Mr Nair said he wrote three letters to Malaysian police in recent months to request information on the status of the investigation into Nóra's death. However, he has received no response.
"Frankly it beats me because it would only take an email to me to say it's progressing or proceeding. It's just they're not replying" he said.
Mr Nair said that if there is no further reply, he has to presume that authorities have closed Nóra's case.
The lawyer, who has been representing the family in the country since her disappearance and death, is appealing to the police to get in contact with him.
He said that he is going to send them another reminder shortly and is hopeful that they will reply.
RTÉ has reached out to the Malaysian police for a response.
Quoirins push for inquest into Nóra's death in Malaysia
Mr Nair also said that he is working towards getting access to a full post-mortem examination report on Nóra Quoirin's body to see if her family can get some more answers into how she died.
"They came with an interim initial report but you can't rely on an interim report alone. There are toxicology and other samples that were taken for such tests. They ought to have given the family the full report by now but they have not," he said.
Mr Nair said that he has been told by authorities that it will take another two months for the full report to be released.
He said usually it takes three months for this to happen but it is common in Malaysia for it to be delayed.
Yesterday, Meabh and Sebastien Quoirin met with officials from the Department of Foreign Affairs in Dublin in the hope that they will help them push for an inquest in Malaysia into their daughter's death.
The couple described the meeting as "positive".
When asked by RTÉ News about the meeting, a spokesperson for the department said that they are continuing to offer consular assistance to the family.
The way to get to the bottom of what happened to Nóra would be to hold an inquest, the family's lawyer said.
Mr Nair said that during an inquest all parties involved, from hotel staff to police officers investigating, could answer questions as to what happened.
It is understood French authorities are behind the Quoirins in asking for an inquest.
