By Tom Liddy
DNAinfo News Editor
MANHATTAN - A philanthropist was brutally stabbed to death by her son in their luxury Upper East Side building, police said.
Barbara Schwartz, 67, was found with stab wounds to the neck and body at the East 85th Street home, near Park Avenue, just before 5 p.m. Saturday.
"She was a very gentle person," a relative, who did not want to be named, told the Daily News.
Cops said that the son, Jonathan Schwartz, 41, began attacking her during an argument in the bedroom of the seventh floor home.
After the assault, the suspect called 911, sources said.
Barbara Schwartz, who headed the Weiden Schwartz Fischler Family Foundation, was pronounced dead at the scene.
"I just can't believe it," the relative told the News. "She loved him, because he's her son - but he gave her some problems."
According to the paper, Jonathan Schwartz was suffering from psychological problems.
The suspect was taken into custody and charged with murder and weapons possession, police said.
He was awaiting arraignment Sunday afternoon.