The tragedy happened Sunday in the middle of the day in the district of Rivière-des-Galets, the Port, on the island of the Meeting.
A man strangled to death his three sons, ages 2, 3 and 5 years.
His eldest daughter, 9-year-old managed to escape and find refuge with a family member who lives near his home.
The man, of forty years, had custody of her 4 children for the holiday and had to bring them back to their mother, this Sunday evening.
It was she who gave the alarm after her ex-husband told her on the phone Sunday morning that he wanted to kill his children and commit suicide.
The forces of the order, which arrived on the scene, have only been able to see the death of the three boys. As the father of the family, the latter was found hanged in the house.
He was rescued, then arrested and placed in police custody. It may not however be heard in the immediate future, his state of health required his hospitalization.