JACKSON, MI -- The house where a 4-year-old was badly burned on Thursday was immediately condemned by city inspectors arriving at the scene, Jackson Public Information Officer Will Forgrave said.

Investigators found an infestation of cockroaches, excessive amounts of urine and feces, a pig, snakes, alligators, dogs and cats in the house on March 2, according to the inspector's report obtained by the Jackson Citizen Patriot through a Freedom of Information Act request.

In the basement of the house in the 400 block of Adams Street, a vandalized furnace and water heater were pumping carbon monoxide directly into illegally-made bedrooms, the report said.

Two children routinely slept in these bedrooms, Forgrave said.

"The inspector was surprised the kids weren't previously injured," he said.

Police arrived at the house at about 3:05 p.m. in response to a report of a child being burned. After assessing the scene, they called the city inspector, police earlier said.

The status of the burned boy still is being investigated, police said. He was taken to Henry Ford Allegiance Health in serious condition and later transferred to Ann Arbor's C.S. Mott Children's Hospital, they said.

The house was found to be in violation of 10 city codes, according to the inspector's report.

"Home noted to be in unsafe and hazardous condition due to excessive amounts of open and exposed wiring throughout," the report said. " Walls and ceilings gutted leaving exposed insulation, framing and electrical wiring."

The house had structural damage to the roof allowing "elements" into it, floors were weak and stairways were unsafe and trash and debris was scattered throughout the home and yard, the report said.

"Structure noted to be unfit for human habitation and in an unsafe/hazardous and blighted condition (detrimental) to the surrounding neighborhood," the report said.

Several children and multiple families were at the house when the inspector arrived, Forgrave said.

Child Protective Services was contacted and the children were removed from the house and taken in by family members, Jackson Police Lt. Chris Simpson said.