DAVID Cameron has been urged to ask the phone hacking inquiry to look into alleged dodgy dealings between the News of the World (NotW) and Met Police during the investigation of the murder of private eye Daniel Morgan.

MP Tom Watson has written an open letter to the Prime Minister asking him to “influence” Lord Leveson’s inquiry into phone hacking to look into links between NotW and the Met Police during the murder investigation.

Five separate Met Police investigations have failed to lead to a conviction since Mr Morgan was found with an axe in his head in the car park of the Golden Lion pub in Sydenham in 1987.

In March this year, Acting Met Commissioner Tim Godwin admitted police corruption had thwarted the investigations and apologised to Mr Morgan’s family.

In his letter, Mr Watson says two people have told him a witness’ statement in the first investigation into Mr Morgan’s death outlined how he was “about to sell a story” to NotW “alleging police corruption” at the Met just before he was killed.

One of the suspects in the murder of the 37-year-old was his business partner in a private detective firm, 56-year-old Jonathan Rees, who worked for NotW from 1993 to 2000.

Mr Watson says the two people he has spoken to told him Mr Morgan had discussed payment for the story with NotW’s crime editor at the time, Alex Marunchak.

Mr Watson, who is MP for West Bromwich East, added: “They further allege that despite witnesses making these allegations, Mr Marunchak was not interviewed by the investigation team.

“They believe he may not have been interviewed in the four further enquiries into Mr Morgan’s murder either.”

Former Met Police Detective Chief Superintendent David Cook is planning to sue NotW for allegedly harassing him in 2002 while he was investigating the murder of Mr Morgan.

It is claimed NotW staff allegedly harassed Mr Cook as a favour to Mr Rees.