Peters responded: "Unfortunately Mr Mitchell has allowed himself to be seriously misadvised."
He explained the brevity of his response by adding, "You should never interfere with the enemy when it's in the process of destroying itself."
Mitchell also took exception to Police Minister Stuart Nash, who questioned Mitchell's integrity yesterday in saying the estranged wife was not in a police safe house and Mitchell was putting out a "story was not correct".
Mitchell has never said she was in a police safe house, but in a house subject to a police safety plan.
"Every piece of information, before it goes public, is tested and verified. That's why I'm so offended by having my integrity challenged by the Minister of Police."
During Question Time this week, National MPs have sought answers to why Immigration officials turned up to a house where the estranged wife was staying, despite the police safety plan.
Mitchell said he had asked Nash to help because she was afraid of Sroubek, a convicted criminal who has gang associations.
"She's been taken away to a safe home in a different part of the country that is subject to a police safety plan, and then, unannounced, two police detectives and an Immigration NZ official turned up at the front door.
"She was asked to do something she felt would make her an even bigger target for Sroubek, felt very uneasy and asked for a support person.
"Immigration NZ tried to push her out in front to take Sroubek on, a person who she is already scared to death of ... to help save a Minister. It's a total disgrace."
Nash initially supported Mitchell in saying that no one but police should have known her address, but later said that police had acted accordingly because they had not divulged any information about where she was.
Immigration NZ confirmed it already had the information