Gardai investigating the murder of Kenneth O'Brien have renewed their appeal for information.

The 33 year old disappeared last Friday - his remains were discovered in a suitcase in the Grand Canal at Ardclough in Kildare the following day.

Kenneth O'Brien left his house a week ago, having told his partner he was working outside Dublin that day.

The following morning, a Saturday, people walking near the Grand Canal in Ardclough in Co. Kildare discovered a suitcase, which transpired to contain Mr O'Brien's torso.

Now Gardai are renewing their appeal for anyone who was in Ardclough near the Canal on Friday and early Saturday last to contact them.

They also want to speak to anyone who may have seen or had any contact with Kenneth last Friday morning, or can help in tracing his movements.

Gardai have searched extensively for the murder scene, but have yet to make a significant find, they are again asking anyone who's returning to their property or business premises after a time away, to check and see if there's anything unusual.

Anyone with information is asked to contact the incident room at Leixlip Garda Station 01 666 7800.