sentences:  On December 16, 1985, only two weeks after Dellacroce's death, Castellano and his new underboss Thomas Bilotti were murdered outside Sparks Steak House in Manhattan.John Gotti now assumed the role of Gambino family boss.Given John Gotti's new position as Gambino crime family boss in 1985, Gotti no longer handled the actual specifics of contract killings and assigned the job to Ruggiero.