The Brad Shipton parole recall

It is disturbing that allegations you have breached your parole can be taken as fact, without an investigation.

I am no fan of Brad Shipton (and criticised the fact Labour’s law allowed him out after one third of his sentence) but why were moves taken to cancel his parole on the basis of an allegation he was seen meeting someone in breach of his parole conditions?

Luckily he had video proof he was in another city at the time.

Should Corrections and or the Police not investigate the person who falsely alleged he had broken his parole?