The couple, Nickie Hunt-Cirelli, 40, and Gary Crockett, 41, reportedly fled from Hunt-Cirelli's uncle's home in Suffern that morning, after neighbors reportedly heard a fight inside.
Hunt-Cirelli's uncle was found dead—police believe he was strangled—that afternoon in his home. Cash and the man's AR-15 had been stolen from the house, allegedly by Hunt-Cirelli and Crockett.
"The note led us to believe that they were going to make a suicide attempt," the source said.
After fleeing Suffern, the couple drove to Manhattan, walked midway across the George Washington Bridge and jumped, reportedly as they held hands. Police found the couple, still alive, in the Hudson River. They later died at Roosevelt Hospital.
They were identified with the help of the Suffern Police Department, who contacted the NYPD after finding the suicide note.