A New Milford man has been arrested for allegedly stabbing another man yesterday at a Grove Street home.  Police responded to reports of an altercation between three men shortly after 8:30am yesterday.  Police determined that 27-year old Dion Bernier stabbed the 28-year-old victim with a large folding knife.  The victim was transported to the hospital for treatment of non-life threatening injuries.  Bernier was also charged with tampering with evidence.  The incident remains under investigation.  Bernier is due in Danbury Superior Court today.