A 5-year-old boy is in stable condition after falling out of the fifth floor window of his family's Bronx apartment Tuesday night, according to the police.

The boy, whose name has not been released, fell from 1415 Bristow Street near Boston Road in Crotona Park East at 7:40 p.m., and landed in an alleyway behind the building. Neighbors told the Daily News that the child is autistic, but the NYPD could not confirm this Wednesday.

The police also declined to confirm if any criminality is suspected, saying only that the investigation is ongoing. Pix11 reports that the window was barred, but that the protective guard was partially open at the time of the incident. Family members were inside the apartment when the boy fell, according to CBS.

"I just heard a scream. He was screaming, 'Wahhh!' and, boom, that was it," one neighbor told the News. "And people were running back and forth trying to get the kid out of the [alley] when the ambulance came."

The child was listed in critical condition Tuesday night and rushed to Lincoln Hospital in cardiac arrest. His status has since been upgraded to serious, but stable.

On Sunday, 3-year-old Latyr Sene died after falling 13 stories from his apartment in the Harlem River Houses. CBS reports that a window guard, which is required by NYC law, was in place when Sene fell.