Connors and Harrison argued violently before she stabbed him in their Manhattan apartment, police said. A neighbor called police after hearing the ruckus, they said.

Connors initially was charged with second-degree murder, criminal possession of a weapon and first-degree assault. She faced a sentence of 25 years to life in prison if she had been convicted after trial.

Published reports quoted Harrison's former wife, Eileen Cavallaro, of Kings Park, N.Y., as saying he had managed Simon's "Graceland" and "Rhythm of the Saints" tours and was in charge of Joel's "Glass Houses" tour.