Updated

LITTLE ROCK, Ark. (AP) — Attorneys for an Arkansas doctor charged in a bombing that hurt the state medical board chairman want a federal judge to bar prosecutors from talking about narcotics the doctor may have possessed.

In court filings this week, attorneys for Dr. Randeep Mann ask that U.S. District Judge Brian Miller not allow evidence about prescription drugs that Mann allegedly distributed between 2006 and 2009.

The doctor faces no drug charges.

He's charged in the February 2009 bombing that hurt Dr. Trent Pierce, and faces illegal weapons charges.

Mann's attorneys say evidence about drugs is irrelevant and would unfairly prejudice the jury. Prosecutors say the drugs evidence indicates Mann's motive: retaliation against the medical board.

The case goes to trial next month.