Victoria's police union boss says he is "proud" of the way officers handled a pre-dawn raid of a Fitzroy home that left a man with a severely broken arm in a terrible case of mistaken identity.

Police Association secretary Wayne Gatt told radio station 3AW on Thursday morning that officers in the Critical Incident Response Team were being pre-judged and the facts of the arrest, particularly claims that officers did not declare themselves, were being distorted.

Police union secretary Wayne Gatt. Credit:Jason South

Contrary to claims from the residents, sources have told The Age police announced themselves three times as they stormed the building.

"I'm not appalled by what our members did," Mr Gatt said. "I'm proud of what our members did. Our members went out and did their job and made an arrest as the community would expect them to do."