A granddad who dropped his 18-month-old grandaughter to her death had to be sedated in the aftermath of the tragedy, according to reports.
Salvatore Anello was described as hysterical after toddler Chloe Wiegand plummeted 150ft on a cruise ship on Sunday.
Investigators believe the grandfather was playing with the young girl when he dropped her.
The Royal Caribbean Freedom of the Seas ship was docked in San Juan, Puerto Rico, when Chloe died.
According to El Vocero , Mr Anello, as well as his wife, son-in-law Alan Wiegalnd and Chloe's paternal grandparents, all had to be sedated by medics.
Prosecutors are investigating the death and say they have not ruled anything out.
Sgt Jose D. Sanchez, acting head of the San Juan Police Department's Homicide Division, told DailyMail.com : "There are various possibilities. It could be a homicide.
"It could be a murder. It could be an accident.
"We are currently in the very early stages of the investigation.
"We haven't ruled out any possibility.
"We are doing a professional, thorough investigation into the events to explain the death of this little girl.
"As police officers our duty lies with the victim."
One passenger told Telemundo PR: “We heard the screams of the families because we were close.
“A cry of pain of that nature does not compare with any other cry.”
Michael Winkleman said on NBC that Mr Anello placed Chloe on a railing that he believed was behind glass.
He claimed that the tot loved to look through windows and would often bang on the glass while watching her brother play ice hockey.
But for some reason one of the panes of glass in the children’s play area where the family were gathered was not there, Winkleman claimed.
The lawyer said: "Essentially her grandfather lifts her up and puts her on a railing and where he thinks that there is glass there because it's clear, but it turns out there was no glass there.
"She goes to bang on the glass like she would have at one of those hockey rinks, and the next thing you know, she's gone."
Puerto Rico Ports Authority spokesman José Carmona said the family was gathered in or near a dining hall on the 11th floor and that the grandfather sat the toddler on the edge of a window.
Henry Escalera Rivera, Commissioner of the Police Bureau, told Prima Hora: "This is a process that is under investigation.
"We must wait to interview relatives and evaluate other evidence to determine if the filing of charges is appropriate."
The Freedom of the Seas has a height of around 210ft and the 11th floor will have been around 150ft above land level when the vessel was docked.
It holds around 4,000 passengers and was ending a seven-day Southern Caribbean cruise of Antigua, St Lucia and Barbados at the time of the tragedy.
