Ex-chemist to be arraigned in drug case

WOBURN, Mass. (AP) - A former Massachusetts chemist accused of faking test results at a state drug lab is set to be arraigned on obstruction of justice charges in two different counties in one day.

Annie Dookhan was indicted last month on 27 counts, including obstruction, perjury and evidence tampering. She pleaded not guilty to 15 counts during an arraignment in Suffolk Superior Court in Boston, but still faces a series of arraignments in other counties.

On Wednesday, Dookhan is scheduled to be arraigned on five obstruction of justice counts: three in Middlesex Superior Court in Woburn and two in Norfolk Superior Court in Dedham.

Prosecutors allege Dookhan fabricated test results and tampered with drug evidence while testing substances in criminal cases. The scandal threatens to unravel thousands of drug convictions.

Dookhan resigned in March.