Gardai will tonight reconstruct on television the last known movements of the murdered Co Dublin teenager, Raonaid Murray (17), in an attempt to prompt the memories of possible witnesses.
Detectives were yesterday still trying to piece together her movements after she left a friend at Scotts pub in the centre of Dun Laoghaire on Friday night. She walked home towards Silchester Park in Glenageary at around 11.30 p.m. to collect money to go to a disco where she had arranged to meet another friend.
It is believed Ms Murray was attacked at around 12.10 a.m. by a person armed with a large knife with a long blade. She received several stab wounds and managed to walk almost 100 yards before she collapsed and died on a pavement close to her home.
It appears her killer was waiting for her in the laneway which joins Silchester Road to Silchester Park where she lived. The point where the murder took place is heavily screened by large trees and in almost total darkness.
Her killer stabbed her a number of times but made no attempt to take her bags or otherwise assault her. One of the blows to her upper chest caused a fatal wound and she collapsed and died within a short time.
Garda sources close to the investigation expressed considerable concern that if the murderer was not known to Ms Murray - and no evidence had emerged to suggest otherwise - the killer could be a very considerable danger to other young women.
Dun Laoghaire is generally an area of low crime, and local officers said there was no record of any serious attacks on young women in recent times.
As part of the investigation a reconstruction is being prepared for tonight's edition of the Crime Line programme.