A fight between inmates at the Regina Correctional Centre sent one person to hospital on Aug, 19. The inmate was taken to hospital with unknown injuries after the fight, but was later returned to the correctional centre. The facility was placed on lockdown after the fight to ensure the safety of all staff and inmates. The incident will be reviewed and the matter has been referred to the RCMP to determine if an investigation will be conducted.
Inmates have fought before at Regina Correctional Centre
Yes, according to the passage, it's clear that inmates have fought before (at least once) at Regina Correctional Centre
( z0 fight :ARG0 ( z1 person :ARG1-of ( z2 imprison ) ) :location ( z3 facility :name ( z4 name :op "Regina" :op "Correctional" :op "Centre" ) ) :time ( z5 before ) )
(z0 / fight-01
    :ARG0 (z1 / person
              :ARG1-of (z2 / imprison-01))
    :location (z3 / facility
                  :name (z4 / name
                            :op1 "Regina"
                            :op2 "Correctional"
                            :op3 "Centre"))
    :time (z5 / before))
Inmates have fought before at Regina Correctional Centre
z1 :ARG1-of z2
z0 :ARG0 z1
z0 :time z5
z4 :op1 2
z4 :op2 1
z3 :name z4
z0 :location z3
z4 :op3 0