State prosecutors filed documents in Hennepin County District Court Friday, asking that Amy Senser turn over medical and chemical dependency records.
Senser is facing two counts of criminal vehicular homicide.
The Hennepin County Attorney's office said in the motion that it's basing its request on a claim made by Senser that she was suffering from a migraine at or before the time she allegedly hit and killed a man on the side of the road last year.
The county attorney's office also says a witness exists who may have treated Senser for chemical dependency following the crash. However, prosecutors say that witness will not disclose information without a court order.
Senser's attorney says the claim that Senser was impaired at the time of the crash is "pure speculation."
The county attorney also responded to an earlier motion filed by Senser's attorney which said the victim had enough cocaine in his system to cause him to move erratically. The county attorney argues that if the victim had been moving erratically, he would have been more visible to Senser.
The trial is scheduled to begin in April.
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