Another year in prison for New Zealand's most prolific stalker.

Glenn Green has been sentenced in the Manukau District Court this morning.

In the latest incident, he breached his release conditions just 12 days after he got out of prison in June.

The charges stemmed from letters and texts sent to four different women.

One of the victims says she's been pursued by Green on and off for 20 years, and says it's 'almost impossible to hide'.

Green has racked up more than 200 convictions in his 20-year criminal career.

Police have previously described Green as New Zealand's most dangerous stalker.