After their mother was brought into jail for observation Saturday night in New York City, two young children died from stab wounds, according to authorities.

When taken to a hospital, a 3-year-old boy and an 11-month-old child who was found in a Bronx apartment with multiple stab wounds to the neck and body did not survive, according to authorities.

Less than an hour earlier, the children’s 24-year-old mother had been arrested and brought to a hospital after acting abnormally at a Mount Hope house on Echo Place.

At a press conference held late Saturday, Patrol Borough Bronx deputy chief Louis De Ceglie stated that neither the mother nor the children’s father had been detained.

Around 7:20 p.m., De Ceglie said, police were called to a report of a “female acting erratic, but non-violent, with no weapons.”

According to De Ceglie, the woman was discovered in the third-floor flat after police received a report that she was attempting to burn goods in the kitchen.

She was brought into custody without incident and held there until an ambulance arrived at around 7:50 p.m. to take her to St. Barnabas Hospital for assessment. Officers were informed by a family friend that the kids were with their father before they left for the hospital, according to De Ceglie.

The same address received a 911 call at 7:55 p.m. reporting two toddlers who were not breathing. He claimed that when police arrived back at the flat, they discovered the lads to be seriously injured.

De Ceglie claimed that while waiting for an ambulance to take the kids to New York-Presbyterian/Columbia University Irving Medical Center, where they later died, officers and a family member attempted CPR on the kids.

“Despite the officers’ best efforts, both children succumbed to their injuries,” De Ceglie said.

According to him, police had detained a “person of interest” and were carrying out their investigation.