Ireland's prison service says guards armed with clubs and riot shields stormed a recreation area at Dublin's main prison where 50 inmates had barricaded themselves for two hours. The Irish Prison Service says two prisoners and five guards were wounded but none critically. One guard was hospitalized with serious facial and dental injuries. Inmates at the overcrowded Mountjoy Prison had been protesting Saturday against new measures meant to deter drug trafficking in the complex. The Victorian-era prison is designed to hold 420 prisoners but has nearly 600 inmates.