A man who viciously beat another inmate in a Maple Ridge prison is seeking to reduce his sentence by arguing he should get extra credit for time already spent in custody.

Charged with second-degree murder, 30, pleaded guilty to manslaughter for the brutal attack that eventually killed Blair Thomas Cody.

Crown and defence have agreed to a nine-year prison term, but disagree on how much credit Tanasescu should get for time spent in pre-sentence custody.

Cody was attacked on May 19, 2010, a few hours after he arrived at the 256th Street provincial prison for breaching probation on a drug possession charge.

The court heard the fight was sparked after Cody called Tanasescu a 鈥済oof.鈥�

According to an internal investigation report, landing a punch that knocked Cody to the floor.

Tanasescu then 鈥渟tomped, kicked and punched鈥� his head. He was seen leaving twice only to return seconds later and continue the assault, landing blows to Cody鈥檚 head 25 times.

A minute after the assault began, guards found the 36-year-old Cody unconscious in a pool of blood. He could barely breathe, according to the report.

Paramedics were called and Cody was rushed via air ambulance to Royal Columbia Hospital.

He was eventually transferred to the 91原创 Hospice, where he remained in a vegetative state until he died 10 months later.

At a sentencing hearing in New Westminster Supreme Court Wednesday, the court heard Tanasescu was anything but a model prisoner.

A corrections officer testified that Tanasescu was often aggressive, hostile to staff and threatened other inmates.

He has two outstanding disciplinary charges and has spent the majority of his time in prison in a segregation unit or under enhanced supervision, which restricts the amount of time an inmate is out of his cell.

Crown prosecutor Andrew Blunt pointed out that it was Tanasescu鈥檚 own actions that led to his segregation.

He argued Tanasescu should not receive a credit of 1.5 days for each day he has spent in custody, given the changes to Canada鈥檚 Criminal Code brought about by .

The Act, introduced in 2010, limits the credit a judge can hand out for any time spent in pre-sentencing custody. Previously, most convicted received a 2-1 credit.

鈥淭here is an absence of any evidence that the restrictions caused him any greater hardship compared to any other inmate,鈥� Blunt told the court.

Tanasescu鈥檚 lawyer, Sheldon Tate, called Crown鈥檚 submissions cruel.

鈥淭he suggestion that there is no evidence of hardship to my client is to say that taking away of nearly 5,000 hours of liberty is meaningless,鈥� said Tate.

He also pointed out that his client鈥檚 plea to manslaughter means he has been vindicated of murder. That suggestion drew a sharp reaction from Cody鈥檚 sister Stacey, a former school board trustee from 91原创.

鈥淥h my god, he killed my brother,鈥� the sister said as Tate continued his arguments.

鈥淗ow disrespectful is it?鈥�

Tate went on to point out that Tanasescu was remorseful.

鈥淚t cannot be said that there were not elements of self defence and provocation at play at the time,鈥� Tate told the court.

鈥淗e didn鈥檛 want this man to die. When he was in the gym, had he wanted that man to die, there was all kinds of available tools 鈥� barbells, metal objects 鈥� that could have been used to quickly dispatch Mr. Cody.鈥�

Justice Robert Crawford is set to sentence Tanasescu Friday.