Aaron Carter's ex-fiancée Melanie Martin has spoken out amid the autopsy results of his death, saying it's brought her no closure.
The brother of Backstreet Boys member Nick Carter was found dead at his California home last November at the age of 34.
He was known as a child star in the '90s and opened for the US boy band on a number of occasions.
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According to an autopsy report, recently obtained by US outlets, Carter accidentally drowned in his bathtub after taking drugs.
The report from the Los Angeles medical examiner noted the effects of sedatives and inhaling gas as contributing to his death.
It said he had died after becoming 'incapacitated' and becoming 'submerged underwater'.
“Difluoroethane is a gas commonly used as a propellant in air spray cleaners for electronic devices that can induce feelings of euphoria when inhaled,” the report stated.
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“It is known to have cardiotoxic effects which can lead to cardiac arrhythmias and sudden cardiac arrest.
“Alprazolam (a benzodiazepine) has depressant effects on the central nervous system which can cause drowsiness and sedation.”
Alprazolam, often sold under the brand name Xanax, was found in Carter’s system as was the presence of difluoroethane.
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It continued: “Based on the autopsy findings, investigative reports and circumstances, as currently known, Mr Carter became incapacitated while in the bathtub due to the effects of inhaling compressed gas and taking alprazolam.
“This resulted in him becoming submerged under water, unable to breath, and ultimately led to his death.”
His death was ruled as an accident.
Martin - who is also the mother of his child - says she is 'still in shock'.
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"The results of the autopsy are not closure for me," she told TMZ.
"It claims death is by drowning but also adds he was wearing a t-shirt and necklace in the bathtub which doesn't make sense, why would he be in a bathtub with clothes on?
"I am still in shock and still miss Aaron every day.
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"I don’t understand the chain of events and this report only has us asking more questions."
A representative for Carter said: "Right now it's a really bad time we're trying to figure out what happened and what the cause of it was.
"We're just as upset as everyone and hope that fans can give thoughts and prayers to his family."
Prior to his death, the singer had a history of drug convictions and reportedly went to rehab on a number of occasions.
Topics: Celebrity