A suspect is in custody following random stabbings in New York City on Monday morning that left three people dead, police said.Police said a 51-year-old homeless man, identified as Ramon Rivera, was apprehended following the third attack and has been charged with three counts of first-degree murder.

The alleged spree killer who fatally stabbed three people in Manhattan told cops in a chilling confession that he targeted his innocent victims because they were “alone” and “distracted,” sources told The Post Tuesday.

Three unprovoked stabbings across Manhattan Monday morning left two men dead and one woman “fighting for her life,” according to the New York City Police Department. A man is in custody, police said.

A man was taken into custody on Monday after allegedly killing three people in an apparently unprovoked stabbing spree in Manhattan, authorities said.