The younger sister of One Direction's Louis Tomlinson has been discovered dead at her home after a suspected heart attack, according to multiple media outlets.
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The Sun reports that Félicité Tomlinson, 18, collapsed earlier this week at her apartment in London.
A friend of the social media influencer reportedly called an ambulance, but the paramedics were unable to resuscitate her.
Authorities are currently treating her death as "unexplained". Police reportedly found no sign of drugs at her home.
A source close to Louis reportedly told The Sun he was "devastated and distraught" over the loss of his sister, who was described as "loveable, caring, bright and beautiful".
The news comes less than three years after Louis' mother Johannah Deakin died, following a long battle with leukemia.