A 53 year old local man has been arrested today in Porthmadog on suspicion of the murder of Ffion Wyn Roberts and is currently being questioned by North Wales Police.
The man has not previously been arrested in relation to this investigation.
Detective Inspector Neil McAdam said: ” We would appeal again for anyone who was out and about in Porthmadog between 4am and 8am on Saturday April 10, and who has not as yet been in touch with police, to contact the incident room on 01745 538474 or to contact the force on 101.”
There is no further information available at this time.