A popular police sergeant who died of a heart attack earlier this month played a pivotal role in the arrest of murderer Stuart Hazell, it has been revealed.

PS Ian Harman, 47, died while on duty at the Merton Park and Cannon Hill safer neighbourhood team (SNT) base, in Aberconway Road, Morden on May 3.

Today, Merton's Borough Commander has spoken of his "pivitol" role in the capture of Stuart Hazell who this week jailed for 38 years for the murder of Mitcham schoolgirl Tia Sharp.

After the 12-year-olds body was discovered Hazell become the subject of a major manhunt with PS Harman the first to deploy officers to Cannon Hill Common in August 2012 after reports of someone matching Hazell’s description were received.

Darren Williams, detective chief superintendent, said: “Ian immediately deployed foot patrols onto the Common whilst arranging for other areas to be covered by on an off-road motorbike.

“The MPS helicopter and dog units had already searched the common without success but Ian was adamant that Hazell was still on the common.

“He also felt that the search was being hampered by well-meaning residents seeking to assist police.

“Ian changed the course of events by ensuring that the area was cleared of the public and then re-secured.

“Once this was done he called the helicopter and dog units back to location to conduct a more detailed search.

“Within 5 minutes Hazell was located and detained.”

He added: “This was so typical of Ian.

“His actions were exemplary as he controlled and lead a high profile critical situation.

“Just over a month ago Ian was formally recognised for this work at my Annual Commendation Ceremony where he was commended for Leadership, Resilience, Professionalism and Dedication to Duty.”

PS Harman’s funeral will be held on Thursday, May 23, at the Randall's Park Crematorium in Leatherhead at 2.45pm.

His family have requested no flowers but have invited people to make a donation to Jigsaw4u - a charity working to support children and young people through trauma, loss and bereavement.

Cheques should be made payable to Jigsaw4u with PS Ian Harman on the reverse and can be posted to the funeral directors: W A Truelove & Son, 121 High Street, Banstead SM7 2NS.