A MURDER probe has been launched into the death of a teen model who plunged 200ft to her death after a threesome with an American Bitcoin tycoon and his wife.

Ivana Smit, 18, was found naked on the sixth floor balcony of a high rise in Malaysian capital Kuala Lumpar in December 2017.

She is believed to have fallen from a 20th-floor apartment owned by Bitcoin tycoon Alexander Amado Johnson, 45, and wife, Luna, 32.

The couple admit to having had a threesome with Ivana on the night she died but deny any involvement in her death, and say they were asleep at the time of her fall.

Cops had originally dismissed the Dutch model’s death as an accident caused by a drug overdose.

But judges gave her grieving mum, Christina Verstappen, permission to set aside a police verdict of “sudden death” and sue investigators for negligence.

Now the investigation into the Malaysian police file has revealed a shocking catalogue of errors.

Cops at first apparently failed to harvest DNA evidence from Ivana’s body to see if anyone else had been involved in the tragic plunge.

Then, when they did find DNA belonging to Johnson under Ivana’s fingernails two months later, it sat on file without any action.

Cops even allowed Johnson and Almazkyzy to flee the country a month later without any attempt to re-interview them, the High Court in Kuala Lumpur heard.

Now cops and prosecutors have been ordered to reopen the investigation and pay Ivana’s mother compensation and costs for her fight for justice.

A verdict on 29th July awarded the heartbroken mum nearly £200,000 in compensation for police negligence.

Christina had sued Inspector-General of Police Dang Wangi, investigating officer ASP Faizal Abdullah, the government Home Minister, and the Malaysian government.

She said they had all failed in their statutory duties and had been negligent in their investigation into what caused her daughter’s death.

The judge also ordered that Abdullah be removed from the task force re-investigating the case.

Judge Roz Mawar Rozain said: “There were evidence preservation failures. There was inadequate witness and suspect handling.

“There was forensic evidence of neglect, and there was expert evidence of dismissal.

“The plaintiff is a direct victim, has suffered harm, and that harm suffered by the plaintiff is the direct and foreseeable consequence of the defendants’ breach of duty.”

She added: “This sequence of events reflects a fundamental breakdown in investigative procedures.

“The presence of DNA evidence linking a suspect to the deceased, especially under such suspicious circumstances, should have triggered prompt and decisive action to prevent the suspect from leaving the jurisdiction.”

A post-mortem at the time found Ivana to have cocaine, alcohol, and an amphetamine called PMMA in her blood.

The couple denied having given Smit drugs or taking any themselves on the night that she died.