Brenna Gray, the widow of Slipknot’s bassist Paul Gray, has testified in a US court about the death of her husband in May 2010.

Brenna Gray says she raised concerns about his drug use with his doctor and also questioned why he was still being prescribed addictive medication.

Daniel Baldi is on trial for nine counts of involuntary manslaughter, including the death of Paul Gray.

Brenna Gray said she was worried that Dr. Daniel Baldi continued to prescribe her husband the anti-anxiety drug Xanax.

According to the Des Moines Register, Brenna Gray testified: “I just knew it was his drug of choice, that he’d struggled with, so I just wasn’t really sure why he was on it, why he needed it along with the medication he was taking for addiction.”

Paul Gray died of a drug overdose at a motel in 2010.

Brenna Gray has testified in court about the death of Paul Gray in May 2010 (photo Des Moines Register)

Prosecutors say that Dr. Daniel Baldi’s careless prescription habits caused the deaths of Paul Gray and eight of his other patients.

The doctor denies the claims.

Brenna Gray said her husband had had a period when he was sober but had started taking drugs again before his death and that she had found needles in the house.

She told the court she tried to make Dr. Daniel Baldi take Paul Gray’s relapse seriously and says he did not keep proper medical records.

According to the Des Moines Register, Brenna Gray said shortly before her husband’s death that she and family members had staged an intervention.

He left home and went to the hotel, she said.

Brenna Gray says she was pregnant at the time of Paul’s death and testified that she did not call the emergency services because she was worried she would be arrested and her unborn child could later be taken by authorities.

She said she called her husband’s bandmates but none of them offered to help her.

Slipknot have released one album since Paul Gray’s death.

Antennas To Hell included singles from four studio albums and live tracks.

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