South Wales Police say the 51-year-old man who collapsed in a Pontypridd supermarket on Wednesday is no longer believed to have been the victim of a crime.
He has now been released from hospital, but faces further questions from officers.
Rain clipping the far north through the evening but elsewhere staying dry with some sunny spells.
Public Health Wales figures show 25 more cases of the virus have also been confirmed.
Photos taken on Saturday morning show Roald Dahl Plass strewn with empty beer bottles and discarded canisters of laughing gas.