Disappearance
Although it ultimately took a full 20 years of working together for matters to come to a head, Mangano eventually met his end at the hands of Anastasia, or so it is believed.
In 1951, Anastasia is believed to have heard of a plot to kill him being formed by his boss, and decided to take pre-emptive action in what he ultimately described as "self defense." Philip Mangano was found murdered near Sheepshead Bay, Brooklyn on April 19, 1951. Vincent also vanished the same day without trace. His body has never been found. Anastasia then took over the family. Although Anastasia never admitted to having a hand in the Mangano murders, he managed to convince the heads of the other families that Vincent Mangano had been plotting to have him killed (a claim backed up by Frank Costello). The Commission thus confirmed Anastasia as the boss of the renamed Anastasia family.
Read more about this topic: Vincent Mangano