The Garda Commissioner is warning people to be careful when it comes to contact they have with people online. It comes as gardai seem poised to launch a murder investigation into the the death of Elaine O'Hara.

Her partial remains were found in the Dublin mountains last Friday.

It emerged last night that a bag containing restraints and some personal belongings of the 36-year-old was found at Roundwood Reservoir in Wicklow two days earlier.

The second site at Roundwood, Co. Wicklow (circled, lower right) is just 20 km from the site where Elaine O'Hara's remains were found at Killakee Mountain (circled, top right)

The bag was discovered before the remains were found in the Dublin mountains last week where searches are also on-going. The 36-year-old from Killiney went missing last August.

Gardai are continuing to examine two scenes in connection with her death.

The death of Ms. O'Hara is reportedly being treated as murder though detectives on the case have not yet upgraded their investigation.

Special Correspondent with the Irish Independent Paul Williams says gardai seem to be following a specific line of inquiry. He spoke to Lunchtime here on Newstalk.