Massachusetts legislators and law enforcement officials are calling for an expansion of state wiretap law to allow police to secretly record more suspects who are targeted in murder investigations and other violent crimes.

Under terms of a bill pending at the State House, authorities would still need a warrant to wiretap suspects, but the targets would not have to be members of a bona fide organized crime outfit, such as the Mafia, according to a summary of the legislation released on Sunday by the office of state Attorney General Martha Coakley.