A pediatric critical care physician at one of the nation's top-ranked children's hospitals was stabbed to death in his own bed early Thursday after a stranger climbed through a third-floor window of his family's home outside Pittsburgh, authorities said. His wife survived multiple stab wounds and remains in critical condition.

Dr. Idris Evans, 46, worked at UPMC Children's Hospital of Pittsburgh and was an assistant professor of critical care medicine at the University of Pittsburgh School of Medicine. Police said he and his wife were asleep around 12:30 a.m. in their home on Linden Avenue in Edgewood Borough, a small suburb just east of Pittsburgh, when a man broke in through an open third-floor window and attacked them with a kitchen knife, according to CBS Pittsburgh.

Police identified the suspect as 32-year-old Elijah Hemingway, who has been charged with criminal homicide, aggravated assault, burglary, criminal trespass and possessing instruments of crime. Officers found him hiding behind a nearby house with hand injuries after a search that followed the attack, according to NBC News.

"A Very Violent Scene"

Investigators described a chaotic and bloody struggle inside the third-floor bedroom. Evans' wife told police she and her husband fought back against the intruder as best they could while yelling for their two children, ages 8 and 12, to run. Both kids escaped the house unharmed and made it to a neighbor's home before their mother, also wounded, went for help herself.

"It was a very violent scene. The bedroom furniture was broken, mirrors broken. It was a very graphic scene," Allegheny County Assistant Police Superintendent Victor Joseph said, according to CBS Pittsburgh.

Evans' wife described the attacker to police as acting "psychotic," saying he repeatedly made comments invoking God during the assault, per the criminal complaint cited by NBC News. She told investigators she believed she heard him say a name — Elijah — though it remains unclear whether the suspect identified himself or she recognized him from elsewhere. Evans was pronounced dead at a hospital; his wife was hospitalized in critical condition.

Colleagues at UPMC Children's Hospital of Pittsburgh, consistently ranked among the country's top pediatric hospitals, have not yet issued a public statement on Evans' death. The hospital's critical care unit treats some of the region's sickest children, and physicians there frequently work overnight shifts before returning home to their own families — underscoring, for many in the medical community, how senseless the attack appears.

Allegheny County police have not said whether Evans and Hemingway knew each other or whether the break-in was random. Hemingway, who was also hospitalized for injuries sustained during his arrest, is expected to face a preliminary hearing once he is medically cleared. Detectives are continuing to process the scene and determine a motive, and it remains unclear how the suspect gained access to the third floor of the home.

Neighbors in Edgewood, a quiet borough of roughly 3,000 residents best known for its historic homes and proximity to Pittsburgh's East End hospitals, described shock at the violence unfolding on their street overnight. No further public updates on the children's welfare or the wife's condition had been released as of Friday afternoon.