Editing Mazher Mahmood (section)

===Leveson Inquiry===
During the 2011 investigation into the unsolved [[Murder of Daniel Morgan]], the private detective firm Southern Investigations came under suspicion due to the activities of [[Jonathan Rees]], a suspect in the case. It was discovered that he had earned £150, 000 pounds a year from the ''News of the World'' by supplying them with illegally obtained information about celebrities. Evidence was found that Mazher Mahmood and other journalists had bought stories about celebrities from Southern Investigations and corrupt police officers. This, combined with phone hacking allegations, lead to the Leveson Inquiry, an investigation into unethical practices by the ''News of the World'' and other tabloid newspapers. It was also found that Mahmood had worked with Southern Investigations on the John Alford sting.

At the Leveson Inquiry, Mahmood testified that he had never commissioned private detectives. When confronted with letters between him and a Southern Investigations PI, he claimed that it wasn't his decision, and therefore he hadn't lied. Eventually, the ''News of the World'' collapsed following the inquiry, and Mahmood went on to work for the ''Sun on Sunday''.