The woman called 9-1-1 for help, saying she had an argument and her son was hurt.
When police arrived, he was already dead.
Beverly, a home health aide who declined to give her last name, works across the hall from apartment 3-C in the Latimer Houses on 137th Street where Rene Vera was stabbed to-death.
"There is always arguments - yelling and screaming and carrying on," she said.
It happened at about 2:30 Wednesday afternoon. Investigators say Rene was 38 years-old, suffered from cerebral palsy and died apparently at the hands of his own mother. She called 911 after a failed attempt to take her own life.
A law enforcement source close to the case tells Eyewitness News that 57-year-old Migdalia Veras claimed her son wanted to die.
That same source says she is being treated at new york hospital, queens for slashed wrists and a self-inflicted knife wound in her chest.
Neighbors who often saw mother and son were shocked that it should come to this. Beverly says she's haunted by words she heard two weeks ago.
"One of them said, 'I'm sick and tired of you,'" she said.
Veras was charged Thursday with second-degree murder.