A fourth man has been arrested this morning in relation to an assault in Bundoran last Monday evening.
A man received suspected stab wounds to his back and shoulders in the assault on the Ross Road.
His injuries are not life threatening.
A 32 year-old male was arrested this morning and is being questioned by gardai.
Earlier in the week three other men aged 19, 22 and 56 were arrested and a file is being prepared for the DPP.