Louis Tomlinson’s late 18-year-old sister Félicité’s cause of death has been revealed.

The teenager was found dead on March 13 in her Earl’s Court apartment, with the Metropolitan Police Service now releasing a statement to confirm she fell victim to the “perfect storm” of lethal drugs.

She took a combination of cocaine, Xanax and Oxycontin, with coroner Shirley Radcliffe saying the mix “proved fatal.”

RELATED: Louis Tomlinson Breaks Silence After Sister’s Tragic Death, Thanks Fans For Their ‘Lovely Words’

According to the BBC, Inner West London Coroner’s Court heard Tomlinson had taken cocaine the night before her death with her friend Zainab Mohammed.

Radcliffe had said Tomlinson was still breathing at 5 a.m. the next morning, but when her friend woke later at around midday she “couldn’t hear breathing” from her bed.

Despite the reports stating Tomlinson was persuaded to complete a rehab stint in autumn 2018, her GP Dr Paul Eulinger said the teen had “refused to give up drugs in the knowledge they could kill her.”

RELATED: Louis Tomlinson Remembers His Late Mother In Interview Recorded Days Before Sister’s Death

Tomlinson’s mother Johannah Deakin passed away after a battle with leukemia in December 2016.

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