Commenting on the ongoing investigation Conservative MS Darren Millar said the health board and the Welsh government should have acted more quickly.
“I think lots of people in north Wales will be astonished that we are almost two years on from when the scandals broke and this health board went back into special measures and yet no one seems to have been held to account for the failings which have taken place,” he said.
“It’s not good enough and the Welsh government is responsible for this given that the health board is in special measures.”
The health board was placed back under special measures, the highest level of supervision by the Welsh government two months after Ms Hill’s leave of absence began.
The health board told BBC Wales neither it nor Ms Hill wished to comment further and did not want to respond to Mr Gruffydd and Mr Millar’s statements.
A Welsh government spokesperson said: “This is an employment matter and therefore a matter for the health board.”
