Series of grisly canal killings which shocked the nation
It is a grisly and chilling image: a body dismembered and dumped in a canal.
Kenneth O'Brien suffered an unthinkable fate, but most shockingly this has happened here before.
Killers hope that dismembered and decomposing bodies will never be found. And if they are, detectives are often hampered in their investigations.
The shocking murder of Kenyan national Farah Swaleh Noor in March 2005 was one such murder, carried out by so-called 'Scissor Sisters' Charlotte and Linda Mulhall.
Charlotte stabbed Noor up to 20 times with a kitchen knife at her mother's home at Richmond Cottage, Ballybough, North Dublin, while older sister Linda later admitted hitting him "a good few times" on the head with a claw hammer.
The women then spent hours sawing up his body before dumping his remains in the Royal Canal and taking his head on the bus to Tallaght, where it was hidden in a park before being moved. Farah's head was never found. Both women denied the murder but were convicted, and sentenced to life in prison.
In July 2001 another woman was linked to the brutal murder of 21-year-old Romanian Adrian Bestea.
He was murdered after girlfriend Marina Sourovtzeva (31) hired three fellow Russians on O'Connell Street to teach Bestea "a lesson" for his violent attacks on her.
The men beat him for four hours at her home at Strand Road in Sandymount before killing him with a blow from a wheel brace.
The following day Mr Bestea's body was crammed into a suitcase and taken by bus to Drumcondra where they dumped it into the Royal Canal. Sourovtzeva was jailed for two years.
The death of Mr Bestea came just 18 months after the brutal gangland murders of Patrick Murray (19) and Darren Carey (20).
The men went missing from Ballyfermot just days before 1999 drew to a close. Both had been blasted in the head with a shotgun on the Aylmer Bridge on the Grand Canal in north Kildare.
Their bodies were then chucked into the water, gardaí recovering their remains in mid-January 2000.
A man was charged with the murders but the case was dropped by the DPP the following year.