It is hoped the tests will break the link between drugs and crime

A compulsory drugs testing scheme has been introduced at police stations in Bradford.

Prisoners being held for offences such as burglary, robbery and theft have to provide saliva samples.

Those who test positive for heroin, cocaine or crack cocaine are offered treatment.

Tests do not take place until someone is charged.

Drugs treatment

The Home Office has backed the testing as a way to break the link between drugs and crime.

Positive tests will be passed to the courts so they can decide if drugs treatment should be part of an offender's sentence.

A similar scheme was launched in Leeds last year.

In the scheme's first week in the Bradford South division, 40% of tests proved positive.

Superintendent Mark Whyman said: "The high percentage of positive tests shows we will combat drug-related crime which creates enormous problems in local communities."