A hunter who shot a child in the head was tonight given a final chance to identify himself.
Detectives in Northern Ireland who believe five-year-old Darragh Somers was hit accidentally warned they will be forced to rethink their strategy if no-one owns up.
The boy remains critically ill on a life support machine after being shot as he played at St Patrick's Primary School, near Enniskillen, Co Fermanagh on Friday.
It is believed he was hit by a stray bullet fired from a .22 rifle by someone out shooting vermin on neighbouring fields.
The officer heading the investigation, Detective Chief Inspector Nigel Kyle, spoke of his frustration that no-one has come forward.
He said: "We haven't been able to speak to the person we are still assuming was involved in a tragic accident.
"If it runs much beyond today we are going to have to look at it in a different way, that someone did shoot the child on purpose."
Mr Kyle, who revealed police are following a definite line of inquiry, appealed for the owner of a mysterious dark blue Toyota Jeep seen at the school just before the shooting to contact detectives.
Vets are to be also questioned about any wounded animals treated since the shooting after it was reported someone may have opened fire on a dog worrying sheep on land near the school playground.
Police have already interviewed gun dealers in a bid to trace the owner of the weapon used.
Ballistic tests are being carried out on a dozen locally owned and legally held .22 rifles seized as part of their investigation.
And officers are trying to recover similar calibre guns in circulation that were not licensed.
PA