Police questioned a Staten Island man on Saturday regarding the deadly shootings of the alleged chief of the Gambino crime family, a police officer said.
Several officials said preliminary evidence suggested the killing was not related to organized crime, but one warned that the investigation was still at an early stage. The unidentified man had not been charged.
The official, who said he was anonymous on the condition that he had no authority to speak publicly about the case, said the 25-year-old man was arrested on Saturday morning in New Jersey and New York by the authorities interviewed.
The officers said the unidentified man had made conflicting statements and investigators had started investigating whether he had been with Mr. Cali's daughter and had been told not to see her again. Public records showed, however, that Mr. Cali has three sons. A criminal case filed in 2008 identified each of his children by name and age, but did not mention a daughter.
The armed man hit Cali's car first and then went to the door of his house at the door rang. A picture of his face was taken by a surveillance camera, a police officer said.