The Department of Buildings says the worker fell from the three-story residential building around 9:15 a.m. on Byrant Avenue.
Eight people were exposed to high amounts of carbon monoxide Sunday at a home in Pelham Gardens, according to fire officials.
Many Con Edison customers tell News 12 that their usage has not changed from one month to the next or from year to year.
Police said the victim and another man got into an argument – then the attacker stabbed the 25-year-old and ran off.