THE BRONX — Authorities told PIX11 News Tuesday that 3-year-old Micha Gee and his 2-year-old sister Olivia were both victims of a homicide.
For both children, the cause of death is blunt impact injuries of torso, according to the city's Office of Chief Medical Examiner.
PIX11 reported first Monday evening that an autopsy performed on Olivia showed her death was a homicide, not an asthma attack.
The autopsy on her older brother was completed Tuesday.
The children had been put to sleep Sunday night about 8:30 p.m. in their family's home on Van Cortlandt Parkway South in the Bronx.
The children's mother, a nurse, and her boyfriend were home at the time.The mother went to bed first.
Sometime after 1 a.m., the boyfriend informed the mother the children were having difficulty breathing.
The mother found Olivia unresponsive and tried to assist her son by giving him an asthma medication called Albuterol.
First responders took the little brother and sister to a hospital where they died three minutes apart.
The mother and her boyfriend were both questioned by police, and investigators from the NYPD's Crime Scene Unit were at the home early Tuesday morning.
Friends say they were well known and respected. The family was, by all appearances, picture perfect.
"I know that they are a wonderful family," said Elizabeth Gonzalez.
Neighbors have been struggling to comprehend how something like this could have happened.
"Something like this never happened before," said Roberto Bustament. "It's very sad, very sad."
In a statement, Mayor Bill de Blasio said:
"Our city is mourning the loss of two young children in a tragedy Monday in the Bronx. As a parent, it’s very painful for me to think about the death of these two children and what the family is going through right now. The NYC Police Department and Administration for Children’s Services will continue to investigate this tragedy."
PIX11's Ayana Harry contributed to this report.