Alejandro, as the child's name was, is seen in the video recorded last Friday falling into the water in a Florida canal with his mother running away indifferent to the fate of her child.
Locals who noticed the child in the water saved Alejandro with his mother, however, not to put him down and take him to a second area, which was more deserted, resulting in the 9-year-old drowning.
Alejandro's body was found a few hours later by passers-by.
On Saturday, the 45-year-old was taken to court, where she was remanded in custody, with information stating that there was an affidavit to the police with which she admitted the crime.
"Unfortunately when Ripley transferred him to a second channel no one was there," said prosecutor Fernandez Rudle, who has taken over the case.
"He tried for the first time but Alejandro was saved. He was alive. He could still be alive today. "His mother wanted, as all the evidence shows, to kill him."
The 45-year-old is facing the charge of premeditated murder without, so far it has become known whether the civil lawsuit will require the death penalty.
What was even more shocking, as the prosecutor pointed out, was that little Alejandro could not speak and that is why he could not tell the people who saved him for the first time who the person who pushed him into the water was.
The 45-year-old had initially claimed that the child was found in the water after an ambush by two robbers who kidnapped him and finally threw him into the water.