CBC News has learned why a man convicted of killing one person and seriously injuring another while drinking and driving in Wabush in 2010 has had his day parole revoked.

In a written decision dated Feb. 21, the Parole Board of Canada said Jeremy Reid's risks of breaching conditions of his parole were no longer considered manageable.

Reid was taken into custody on Dec. 28 on a warrant of suspension by Corrections Canada.

He had been on day parole since Dec. 3, 2012, after serving seven months of a sentence for criminal negligence causing death and criminal negligence causing harm.

Decision details events of late December

The decision goes on to describe the events which triggered Reid's return to custody.

Reid said shortly after his grandmother's funeral, several days before Christmas, he experienced memories from the hit-and-run incident and of his brother's suicide.

He stated he felt bad for his victims' families, and spoke to his father about it, but failed to advise halfway house staff.

Reid then met an acquaintance through Facebook and drank beer at her residence.

On Dec. 27, he returned to his halfway house smelling of alcohol. On Dec. 28, his parole officer was alerted, warrants for his apprehension and suspension of day parole were issued, and Reid was taken into custody.

'Poor attitude', say case managers

The parole board decision said his "case management team is of the opinion that the circumstances leading to your suspension were well under your control"

"It appears that the death of one victim and the injuries sustained by the other as a result of your actions did not prove as deterrents."

Reid's case management team, the document continued, "believed [his] return to alcohol use demonstrates a lack of motivation and poor attitude towards supervision."

Reid is now back behind bars, serving the remainder of his three-year, 26-day sentence.