One of the women charged in relation to the murder of slain Tamworth police officer David Rixon will spend at least 18 months behind bars.
29-year-old Monica Sampson appeared before Tamworth District Court today, charged with hindering the discovery of evidence.
She was sentenced to three years in prison, with a non-parole period of 18 months.
Senior Constable Rixon was gunned down while conducting a routine traffic stop in March this year.
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