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Mandatory polygraph testing for sex offenders is set to be rolled out across England and Wales following a successful pilot scheme, ministers say, according to BBC.

It found offenders who were tested were more honest and gave better information, which meant they were managed more effectively.

The pilot took place in the East and West Midlands probation areas from April 2009 to October 2011.

There are approximately 3,000 sex offenders on licence in the community.

Of these, 750 are considered to be in the most serious category of offender.

The government said it was now considering how the tests could best be used to manage offenders.

The pilot scheme found offenders using lie detectors made twice as many admissions to probation staff, for example admitting to contacting a victim or entering an exclusion zone.

Offenders also reported that the tests helped them to manage their own behaviour better.

An offender can immediately be returned to prison if the lie detector tests and other information indicate they have broken their conditions or present a risk to public safety.

The government said the tests would be in addition to the rigorous conditions sex offenders face when they are released from prison, which includes signing the sex offenders register.