Authorities have arrested two 16-year-old parents after their 8-month-old baby girl died Tuesday morning.
San Benito police charged the teenage couple with criminal negligent homicide on Friday morning.
Investigators told Action 4 News that the couple called 911 on Tuesday to report their baby was not breathing.
Detectives said the baby lived with its teen parents and its paternal grandmother at a mobile home on the 300 block of South Oscar Williams Road.
Investigators learned that the baby had been put to sleep with her 48-year-old grandmother late Monday night.
The grandmother left the family's for work early Tuesday morning and told her son to get his baby girl.
The 48-year-old woman came back to the home around 11 a.m. Tuesday, did some chores and discovered the baby wedged between mattress and the wall.
The grandmother screamed, at which both parents came running into the room.
Police officers and paramedics tried to revive the baby, which later had to be taken to the Harlingen Medical Center.
The baby was later pronounced dead at the hospital.
Investigators told Action 4 News that the baby girl's 16-year-old parents were the only ones inside the mobile home at the time of the incident.
The parents names were not released because they are minors.
They both remain in custody under criminal negligent homicide charges at the Darrell B. Hester Juvenile Detention Center in San Benito.