The heartbroken mother of Good Friday murder victim Kimwandae Walker appealed for help to catch his killers, as detectives revealed fresh details about the case.

Mr Walker, 35, was shot dead in front of his nine-year-old son and four-year-old daughter as they flew kites on the Victor Scott school field.

Eight months later, no one has been charged with the crime. Despite up to 60 people being on the field when the daylight slaying took place, just nine have given witness statements to the police.

Yesterday, detectives took the unusual step of holding a press conference to enable Shelley Walker to make a public call for information.

“On Good Friday 2010, my whole world went dark,” she told reporters.

“While I was at home preparing fish cakes for my son to collect, he was at Victor Scott school field; a public place, a place where families have for generations gathered to celebrate this most holy day.

“One moment he was frolicking with his children, teaching them to fly kites and generally enjoying his time with them. The next moment he was running for his life as he was being chased by persons with a gun, determined to end his life and this they did, while his children watched in horror.”

She broke down in tears and paused for a while, before describing the devastation and pain her family has suffered.

“His children will never see their father again. They will forever have the memory of seeing him shot down like an animal in their hearts and their minds. To see the pain on their faces breaks what's left of my heart,” she explained.

Ms Walker urged anyone with information about the crime to come forward.

“There is someone, somewhere, who knows who killed my son. Please speak up. You don't have to identify yourself in these times that we are living in we don't expect you to,” she said.

Echoing her call, Detective Chief Inspector Nicholas Pedro said of the investigation: “Good progress has actually been made in some areas and we're very keen to progress the case further.”

He said three men have been arrested and bailed during the course of the “meticulous and painstaking” investigation, which has included forensics and specialised analysis of the evidence.

Det Ch Insp Pedro revealed for the first time that the two men responsible for the shooting rode onto the field on a light coloured 125cc scooter. They shot the victim seven times all in the head and body.

One of the men had a scarred face and one had a green scarf over his face.

However, he explained: “To date, we have recorded nine statements from the approximately 40 to 60 people who we believe were on the field that day. Those brave people who have come forward and given statements have given very good accounts of what happened and we are pleased with the level of detail they've been able to provide, but we still need people to come forward and tell us what happened.”

The detective said some of those present may have shot video or pictures of the area, although not necessarily of the incident itself which took place around 2.15pm. He urged them to let Police see this, “no matter how insignificant” it may seem.

Mr Walker was known to the Police before his death. In July 2004 he was cleared of a string of drug offences after a Supreme Court trial. He was also charged with three gun offences in October 2002 possessing a firearm, having one in a public place and intending to use it to endanger the life of a man. The Crown dropped the charges when the alleged victim refused to testify at a preliminary inquiry, saying he'd been threatened.

Asked why Mr Walker was killed, Det Ch Insp Pedro said “there is certainly a hypothesis” that Police are working on, but he did not wish to divulge it.

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Anyone with information should call the Serious Crime Unit on 295-0011 or the independent confidential Crime Stoppers hotline on 800-8477.