Liam Payne's family are still seeking answers surrounding the star's tragic death as they prepare for his funeral.
RadarOnline.com can reveal mystery continues to surround the One Direction singer's fatal balcony plunge last month.
Police in Argentina have arrested three people in connection with the incident, but Payne's family are determined to find out how he fell from his Buenos Aires hotel room.
A source said: "Liam's family knows that he was struggling with his own personal demons, but they also want answers as to why and how he ended up falling from his hotel balcony.
"And if someone is responsible for contributing to Liam's death, they want to see justice served. The family needs and deserves closure."
Payne was in the Argentine capital with his girlfriend Kate Cassidy in the weeks before he died, aged just 31.
He had also seen fellow One Direction bandmate Niall Horan perform in the city.
Cassidy left the country alone and returned to the couple's Florida home in the days before Payne died.
She said at the time that their trip to Argentina had been extended for two weeks but they had only meant to be there five days.
RadarOnline.com revealed on Wednesday Payne allegedly sent his ex-fiancée and her family explicit images of himself before his drug-fueled death.
Maya Henry's attorney fired off a cease and desist letter to Payne, his lawyers and his agents, after he allegedly bombarded her and her family with "unsolicited and disturbing" photos and videos of himself.
The cease and desist letter was sent on October 9, one week before Payne fell to his death.
Henry's cease and desist letter alleged the former boy band member "repeatedly sent unsolicited and disturbing images and videos in the past to Maya Henry, and Maya’s family members".