Three radical person been released connected bail aft the bodies of 2 babies were found.
Officers were called to a spot astatine Maes-y-Felin, Wildmill, Bridgend county, connected the evening of 26 November.
Two men, aged 37 and 47, and a woman, 29, were arrested connected suspicion of concealing the commencement of a child.
South Wales Police proceed to analyse the find of the bodies of 2 babies.
The constabulary confirmed that detectives were conducting respective lines of enquiry successful narration to the find of the bodies of 2 dormant babies. This includes holding a fig of scenes, including properties, truthful that enquiries tin beryllium made.
For guidance, 1 of the scenes was released yesterday and the different should beryllium released aboriginal on.
Det Supt Darren George said: "My thoughts stay with anyone affected by this traumatic incident.
"I americium are alert of the interaction this incidental has had connected the assemblage and would similar to convey witnesses and section residents who person travel guardant and worked intimately with america implicit the past fewer days.
"This is simply a analyzable and delicate probe and determination has been an accrued constabulary beingness successful Wildmill since Saturday, this volition proceed implicit the coming days arsenic enquiries continue.
"We cognize this update volition interaction connected the section assemblage wherever this incidental happened and beyond, and I'd promote anyone with concerns oregon worries to talk to their section Neighbourhood Policing team."
South Wales Police person appealed to anyone with accusation to get successful touch.