Ferdinand received a threatening letter

London police said, it has began an investigation about the death threats to QPR football player Antoine Ferdinand, reports Beta.
 English football player, who is younger brother of Manchester United's defender Rio Ferdinand, were referred a threatening letter, and as quoted English media, it is delivered to the address of the club.
Ferdinand is already in the process of police investigation because he was allegedly racially insulted by Chelsea captain John Terry.
 Defender "Terry" denied the allegations.