ST. PAUL, Minn. (AP) - Details behind a scathing audit of MNsure show more about who knew of problems at the health exchange and what was done to fix them.

Several top government officials largely blamed the exchange's former leader for mounting problems. What was billed as a "surge" of dozens of tech workers to fix issues turned out to be just nine employees.

Those details are in hundreds of interviews the Office of the Legislative Auditor conducted for its audit last week.

Gov. Mark Dayton told auditors he learned of troubling problems weeks before the exchange launched. Dayton previously told reporters he wasn't informed of serious issues until after the Oct. 1 start.

The governor's spokesman stresses Dayton had alluded to some possible problems about a week before MNsure's launch.