The father of a rapper shot dead in a case of mistaken identity is to appear on a BBC documentary.

Saj Tufail was filmed dicussing joint enterprise for Guilty by Association, which will be screened on BBC One on Monday night.

His son Umar, 25, was shot dead outside his house in Wharncliffe Road, South Norwood, in July 2012. 

His killers Sanchez Thomas and Kyrone Daley, both now 20, were convicted of his murder as joint enterprise last year. 

It thought Thomas, who was jailed for at least 25 years, pulled the trigger, but planned the murder with lifelong friend Daley, who will serve a minimum of 22.

They had intended to kill Umar's younger brother Amir, with whom they had a running feud. 

Guilty By Association will air at 10.35pm on BBC One.