The child’s death is one of several in recent months. The medical examiner is seeking a cause as investigators look for the man and woman who left him.

Further testing will need to be done to determine how little Kyng Royal Foster died, a spokeswoman for the city Medical Examiner said.

Kyng Royal Foster was identified by loved ones as the toddler pronounced dead shortly after his mother and her boyfriend allegedly abandoned him at University Hospital at Downstate.