The drive-by shooting has sparked fears of a return of mob violence of the past.
Investigators in New York are searching for an attacker who killed an alleged gangster, Franky Boy Cali, outside his home on Wednesday night.
The drive-by shooting has sparked fears of a return of the mafia killings portrayed in the Sopranos TV series and Hollywood movies.
Police fear the murder of Cali will provoke revenge attacks.
Al Jazeera’s Gabriel Elizondo reports from New York.