A woman has been arrested after allegedly trying to suffocate her 7-month-old son.

Authorities said they took 23-year-old Jennifer Sandor, of Goodlettsville, Tennessee, into custody and charged her with attempted criminal homicide after she allegedly tried to suffocate her son, who was a patient at Vanderbilt Children’s Hospital.

Sandor had taken her baby to the hospital for unexplained medical episodes that left the child blue and limp.

On Friday, staff at the hospital said they witnessed Sandor use her hands to cover her son’s mouth and nose, preventing the baby from breathing.

Reports stated the child was in obvious distress. They added he was struggling to free himself.

Authorities said Sandor released the child only after staff intervened.         

Sandor was being held in lieu of a $200,000 bond.