A patient at PoCo's Forensic Psychiatric Hospital who attacked child killer Allan Schoenborn with a billiard ball, as well as stabbing an employee with a homemade shank, has been sentenced to two years in jail.

Matthew Poore pleaded guilty to assault with a weapon and assault causing bodily harm in connection with the two incidents.

On April 11, 2011, Poore and Aaron Earl Fields were playing pool at the hospital.

According to reasons for judgment released last week, there was bad blood between Schoenborn and other patients at the hospital, and as a result, Poore and his co-accused Fields assaulted Schoenborn.

Poore kicked Schoenborn several times and hit him on the head with a billiard ball.

Schoenborn sustained bruises and cuts, including injuries to his left temple, top of his head and one of his arms.

On July 26, 2011 - the day after he pleaded guilty to assaulting Schoenborn - Poore stabbed a hospital employee with a shank he made by wrapping the temples from his eyeglasses in gauze. The employee had severe injuries to his cheek, eye and mouth.

Poore was sentenced to six months for the assault on Schoenborn and 18 months for the assault on the employee. He will serve his sentence at the Regional Psychiatric Centre. Fields was sentenced to nine months in jail.

Poore, who has a lengthy criminal record, was placed at the hospital in 2010 after a theft and assault on a police officer in Kamloops. He suffers from schizophrenic disorder, bipolar disorder, polysubstance abuse and attention deficit disorder.

Schoenborn was placed at the facility in Feb. 2010 for an indeterminate amount of time after he was found not criminally responsible due to a mental disorder for the April 2008 murders of his three children, 10-year-old Kaitlynne, eightyear-old Max and five-year-old Cordon.

Last April the B.C. Review Board granted Schoenborn escorted day trips, but public outrage - and the revelation that Schoenborn's ex-wife Darcie Clark lived in the area - prompted reconsideration. In the end, Schoenborn withdrew his request because he didn't want to inflict further hardships on Clarke. Another review board hearing is expected to be held this April.