London: A new book claims Facebook founder Mark Zuckerberg used to threaten to behead under-performing staff with a Japanese samurai sword.
According to Mirror, Noah Kagan known as employee #30 said it was part of Zuckerberg`s "immature" management style when he started out aged 23.
Kagan said that Zuckerberg would pretend to cut employees, joking if they took down the site he`ll chop their heads off.
Kagan, in the book- How I Lost 170 million dollars, said that during his time as employee number 30, Zuckerberg once threw water over an engineer`s computer, as he did not like his work and screamed at him to redo it.
Kagan was at Facebook for eight months but fired in 2006 and lost out on a 0.1 percent share in the firm - worth 101million pounds, the report said.