West Yorkshire Police said Sir Norman had previously welcomed an investigation into Hillsborough and had nothing further to add today.
A spokesman said:
Sir Norman Bettison has consistently made the point since 15th September, three days after the report was published, that these were matters that needed to be investigated formally and fairly by the IPCC.
At the time, he immediately welcomed the Police Authority's decision to refer this matter.
He is on record as saying he is keen to co-operate with the IPCC inquiry, but now that has been launched, he has nothing further to add.