Baltimore police have arrested the parents of a 9-day-old boy in connection with his death.
Matthew Kirsch, 37, and Anne Kirsch, 35, are charged with murder, child abuse, neglect and assault-related charges, police said Friday.
Police said officers were called on Oct. 20 to a house in the 4200 block of Groveland Avenue on a report of an unresponsive child. The infant was taken to Sinai Hospital, where he died.
The infant's parents told investigators that they found the child unresponsive. Police said an autopsy revealed the cause of death to be homicide by blunt-force trauma and neglect.
"It's really even tough to find words to describe what this 9-day-old child had to endure during his very short life," Baltimore police Detective Jeremy Silbert said.
According to charging documents, the baby was born in an auto repair shop, where both parents worked, the birth was never reported and no doctors were involved.
The birth of the infant, also named Matthew Kirsch, was announced on Facebook on Oct. 11. His father wrote: "My first child born at 7 this morning, and it's a boy."
Police said investigators believe that the infant was neglected and abused in the nine days that followed. Police said they found signs of dehydration and malnutrition.
A report from the Medical Examiner's Office says the "child was a road map of abuse and neglect," and that his stomach was empty except for gastric fluid.
Investigators said they believe the couple tried to give the impression that they were feeding the child by placing bottles of formula out before they called 911.
The medical examiner also reported an injury to the back of the boy's head consistent with being slammed on a flat surface.
Charging documents say the couple "caused such egregious conditions that they managed to deplete the life of the child, causing his death in only nine days."
Neighbors in the 4200 block of Groveland Avenue said the house where the couple lived has been vacant for about a year and they believe the couple was living there without the owner's permission.
"They came out with what appeared to be a small baby and put it in the ambulance, and then I left for work, and when I got back home about 5 o'clock, I saw the house taped off," a neighbor told 11 News.
The charging documents say the couple have been married for 13 years and share a heroin addiction. The charging documents say Anne Kirsch admitted she used heroin during the pregnancy. Investigators said the child may have been born addicted to the drug.
Both parents are being held at Central Booking.