In the US state of New Jersey, an 8-year-old girl, her mother and grandfather drowned in the pool.
The tragic incident occurred right in the courtyard of the house where the family moved less than a month ago.
A medical examination of East Brunswick police has proven that accidental drowning was the cause of death.
Police and an ambulance were called by a neighbor who accidentally heard screams for help when he went outside.
Arriving at the scene, law enforcement officers found the bodies of three people.
Another family member remained to live in the house: he refused to comment on the tragic event.