Midlothian Council has written to the Scottish Government seeking a public inquiry into the carbon dioxide outbreak in Gorebridge.
Dangerous levels of carbon dioxide were first detected on Newbyres Crescent last September when six people were treated in hospital.
Since then five homes have been evacuated and residents in the remaining 60 homes have now been told they will have to be moved for at least three months while work is carried out in their homes.
Midlothian Council is now keen to get to the bottom of why this outbreak occurred in these council homes, which were built in 2009.
In an exclusive interview with the Advertiser, Midlothian Council leader Owen Thompson (SNP) said: “We as a council don’t have the authority to call for a public inquiry. But we have written to Health Secretary Alex Neil and the chairman of NHS Lothian Brian Houston, because the first priority has been to make it safe for residents. But now it’s appropriate to look at how did this happen?
“There is some questions about that and we don’t know the answers. A public inquiry won’t be cheap, but it’s important we get one.”
Read more in this week’s Advertiser, out now.