Police say nine days have gone by since the last reported New York City homicide, which was on January 16 in the Bronx.
A woman was found dead Friday in Brooklyn. Her death is being called suspicious, but with no obvious signs of trauma.
The cause of death hasn't been determined.
The only other recent time the city saw a streak of nine days was after Hurricane Sandy.
The police commissioner said there's no single reason for the streak, but didn't deny that the cold weather may be playing a factor.
Records show only 18 murders in the city so far this year.
The city is coming off a year with 414 murders, the lowest total since record keeping began.