Detectives say they are following a 'number of lines of enquiry' as they continue to investigate the murder of teenage boy found dead in a Salford park.
The body of Alan Szelugowski, 17, was discovered by a dog walker in Clowes Park on Sunday morning.
He had suffered a single stab wound.
A 17-year-old boy was arrested on suspicion of murder and later released under investigation.
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There will be an increased police presence in the area this weekend as officers continue to appeal to the public for information.
Det Chief Insp Gareth Davies, of GMP’s Major Incident Team, said: "One week in, my team are continuing to gather information from the community to lead us to the person or people responsible for Alan's death so we can bring them to face justice.
"We have a number of lines of enquiry but it is essential that members of the public tell us what they know about the circumstances - whether that be directly via phone, our website, the Major Incident Public Portal or anonymously via Crimestoppers."
A GoFundMe page has raised more than £1,300 to support Alan's family.
The person behind the fundraiser, who set up the appeal with the blessing of Alan's family wrote: "I am the neighbour of Alan's family and have been for 10 years.
"Alan was such a polite respectful young lad, unfortunately on Sunday morning his body was found in a local park.
"His family are really distraught by this news and unfortunately the parents do not speak English as they are from Poland."
Assistant Chief Constable Tony Creely, speaking before a fatal stabbing in Dukinfield on Friday night, said: "The fatal stabbing of Alan Szelugowski was the second in Greater Manchester in as many weeks and will undoubtedly have caused concern but I can promise residents that fighting, preventing and reducing knife crime is a top priority.
"GMP is working with partner agencies on several initiatives to keep people safe from these weapons which, in the hands of criminals, are stealing lives; devastating families and posing threat; harm and risk to our communities.
"That being said, we all have a part to play. If you know or suspect someone carries a knife, I ask you to contact us as soon as possible - before it is too late. If you have any other information about crime, please share that too.
"Neither GMP nor the justice system will tolerate this type of crime - we are proactively stopping and searching individuals and I would remind offenders that carrying a knife can result in a prison sentence and lifelong criminal record."
Anyone with information about the death of Alan Szelugowski is asked to contact the Major Incident Team quoting Operation Rabaul via 0161 856 0055, gmp.police.uk or https://mipp.police.uk/operation/06GMP22F20-PO1.
