It is believed that gardaí are investigating a known Dublin criminal over a possible link to the murder of Kenneth O’Brien, whose body was found mutilated in a suitcase.

However they stress that this is just one line of inquiry into the ‘extremely complex case’ in which new information continues to turn up throughout the investigation.

Gardaí will be releasing a description of the suitcase in which Kenneth O’Brien’s body was found, in the hope that it will help gain insight his disappearance and murder.

33 year old Kenneth O’Brien was murdered and his body was found mutilated in a suitcase

The family man was alone on his house before he went missing, his partner had already left their home in the family car to go to work.

Gardaí are investigating whether the 33-year-old was collected by someone outside his home or whether he met with someone at a different location.

The father-of-one had told his partner that he would be leaving Dublin the following day for a job, however it is believed that he never actually left Dublin.

Gardaí are releasing a description of the suitcase in the hope that it will lead to more information

Investigators are eager to determine the time of day at which Mr O’Brien left the house, to narrow down the time frame during which he may have been seen on CCTV.

They hope to use the CCTV footage to see whether Mr O’Brien walked away from his estate or whether he was picked up.

Gardaí are also investigating the possibility that threats were made to a woman known to Mr O’Brien and other people known to him, in the weeks before he was killed.

One known Dublin criminal is being questioned about a possible connection

‘New pieces of information are coming in all the time and over 50 new lines of inquiry have opened up in the last 24 hours,’ a source has explained to the Irish Independent.

A reconstruction of events will be launched this evening and tomorrow at Ardclough on the stretch of the Grand Canal where the suitcase was found.

The Irish Independent reports that a senior officer has told the paper that he is ‘quietly confident’ that the killer will be caught, but that the investigation would be lengthy.