Historic underworld events from the month of April:
- 01 Apr 1869 - New Orleans Mafia boss Raffaele Agnello is shot to death.
- 02 Apr 1973 - New York Mafioso Frank "Funzi" Tieri is arrested and charged with loansharking.
- 03 Apr 1941 - Harry Maione and Frank Abbandando are convicted - in their second trial - of the murder of George Rudnick.
- 04 Apr 1927 - Chicago Detective Dan Healy shoots and kills North Side gangster Vincent "the Schemer" Drucci.
- 04 Apr 1931 - After hiding out for 10 weeks, Dutch Schultz shows up for questioning by the NYPD related to a Jan. 24 nightclub brawl.
- 05 Apr 1884 - The lifeless body of Camillo Farach is found in a field on Staten Island.
- 06 Apr 1890 - Provenzano-Matranga feud erupts with a Provenzano attack on a wagon carrying Matranga workers. Two men are seriously injured.
- 06 Apr 2009 - Federal agents arrest reputed Bonanno boss Salatore Montagna and plan to deport him to his native Canada.
- 07 Apr 1972 - Renegade New York Mafioso "Crazy Joey' Gallo is shot and killed at Umberto's Clam House in Manhattan.
- 08 Apr 1962 - New York mobster Anthony "Tony Bender" Strollo disappears.
- 09 Apr 1913 - Amadeo Buonomo, believed to be a member of Aniello Prisco's East Harlem gang, dies from a gunshot wound to the head.
- 09 Apr 1974 - In Detroit, Anthony and Vito Giacalone are acquitted of income tax evasion.
- 09 Apr 1984 - Four hundred law enforcement agents raid homes and businesses from New York to the Midwest to break up the Pizza Connection heroin ring.
- 10 Apr 1959 - Santo Trafficante-backed Sans Souci nightclub in Havana is closed due to financial problems.
- 10 Apr 1977 - John Lardiere, out of prison on a two-day Easter furlough, is found shot to death at the Red Bull Inn in Bridgewater NJ.
- 11 Apr 1974 - Anthony Russo wins release from prison after agreeing to testify before NJ crime commission.
- 11 Apr 1920 - Counterfeiter Giuseppe Calicchio is paroled from Atlanta Federal Prison.
- 12 Apr 1914 - On Sumner Street in East Boston, Antonio Messina is shot three times but claims he did not see the gunman.
- 14 Apr 1887 - Believed responsible for an 1881 Mafia killing, Antonio Flaccomio is attacked in New York but escapes.
- 14 Apr 1903 - The body of Benedetto Madonia is found within a barrel left at New York's 11th Street and Avenue D.
- 15 Apr 1931 - Giuseppe "Joe the Boss" Masseria is assassinated during lunch at Coney Island's Nuova Villa Tammaro restaurant, 2715 W. 15th Street.
- 16 Apr 1912 - Calogero Morello, son of jailed Mafia boss of bosses Giuseppe Morello, is shot to death in an East Harlem gunfight.
- 16 Apr 1957 - Former Chicago underworld boss Johnny Torrio dies of natural causes in New York.
- 17 Apr 1959 - Genovese crime family leaders are convicted of narcotics trafficking. Vito Genovese is sentenced to 15 years.
- 19 Apr 1951 - The body of New York Mafioso Philip Mangano is found in a marsh near Jamaica Bay.
- 22 Apr 1907 - Trial of 13 Italians accused of Black Hand society membership begins in Wilkes Barre, PA.
- 23 Apr 1918 - Vito Genovese is arrested for felonious assault in Queens, NY.
- 24 Apr 1903 - Chicago Mafioso Anthony D'Andrea is sentenced to 13 months in Joliet for counterfeiting.
- 24 Apr 1965 - Former New York gang leader Owen Madden dies of natural causes in a Hot Springs, AR, hospital.
- 27 Apr 1951 - Kings County District Attorney's office questions Mafia boss Frank Costello about the murder of Philip Mangano.
- 27 Apr 2009 - Angelo Prisco, 69, reputed Genovese Crime Family lieutenant, is convicted of conspiring to kill his first cousin on orders from boss Vincent Gigante.
- 28 Apr 1906 - Anthony Accardo, future Chicago crime boss, is born.
- 28 Apr 2009 - Chicago jury convicts former deputy U.S. Marshal John T. Ambrose of leaking information about a federal racketeering witness.
- 29 Apr 1914 - "Johnny Dio" Dioguardi, future New York labor racketeer, is born.
- 29 Apr 1960 - Dioguardi, 46, is sentenced to four years in prison for tax evasion.