One of Calgary's most notorious child sex offenders has been re-arrested, charged with breaching the conditions of the Sex Offender Information Registration Act.

Erik Wanamaker appeared in court Monday, accused of failing to tell authorities where he's been living since 2015, a condition of being on the sex offender registry for life.

The 69-year-old has been committing crimes against children for decades.

Children victimized for decades

In 1992, he was convicted of several sex offences involving children and sentenced to 11 years in prison.

Six years into that sentence, Wanamaker and a fellow inmate escaped from the Bowden Institution. They were arrested after a 14-year-old girl was abducted from the area.

Wanamaker was found not guilty of abduction and sexual assault charges in 1999 but an additional six months was tacked on to his sentence for the escape.

When he was released in May 2004, police issued a warning about Wanamaker's history of victimizing young girls.

It was 2006 when police next arrested Wanamaker. Officers caught him looking at child pornography on a computer while hanging out at Olympic Plaza, where children were playing nearby. He was convicted of possessing child pornography and sent back to prison.

He was released again in 2008.

In 2011, Wanamaker received a two-year jail sentence and three years of probation for accessing child pornography after his tenant told police he saw images of naked children on the man's home computer.

At that time, because of Wanamaker's multiple convictions, he was also placed on the national sex offender registry for life. He is banned for life from any place that children could be, including playgrounds and swimming areas, and he must register his address with authorities.

Wanamaker has three other charges before the courts, accused of stealing and being in possession of stolen credit cards in Banff in 2016.

Defence lawyer Yoav Niv adjourned the breach matter until next week and Wanamaker remains in custody.