The Mount Vernon man involved in a triple murder-suicide in Brooklyn Monday night had a violent criminal record, according to police.

According to the NYPD, 46-year-old Joseph McCrimon was at a party to celebrate his 9-year-old daughter's birthday when he gunned down the child's mother - 45-year-old Rasheeda Barzey - along with the girl's half-sisters, 20-year-old Solei Spears and 16-year-old Chloe Spears.

McCrimon's 9-year-old daughter was found unharmed inside the apartment after a chilling 911 call where she told police, "Daddy's not coming for my birthday, he didn't bring presents."

Police believe McCrimon then turned the gun on himself.

His body was found outside a building at the same apartment complex on Sutter Avenue in Brooklyn.

Police say this was not McCrimon's first offense.

According to the State Department of Corrections, he was convicted of manslaughter back in 1995 and served about eight years in Sing Sing prison in Ossining.

News 12 has also learned that McCrimon was involved in a bank robbery in Ardsley back in 2013.

According to U.S. Attorney's Office records, he entered a Wells Fargo and handed the teller a note that threatened to detonate an explosive device unless the teller gave him $20,000. He was sentenced to five years in prison.

Police tell News 12 that his motive in the latest incident is still under investigation, but that they know he left to see them in an agitated state.

Police say McCrimon and Barzey had a rocky, on-and-off relationship for 20 years.

Police say there was no history of domestic issues or 911 calls.

Those who live near his house in Mount Vernon tell News 12 they’re shocked to hear this about their neighbor. "The people I've encountered next door have always been very kind," says one neighbor. "I haven't seen nothing different, you know like fighting. No, I never saw that," says another.

News 12 has learned that the 45-year-old mother, Rasheeda Barzey, was an employee at NYC Health + Hospitals. The hospital said in a statement, “We are deeply saddened by the senseless death of a member of the NYC Health + Hospitals family. We have activated our Helping Healers Heal team to support those who worked beside this staff member and may need grief counseling.”