A man was arrested after he allegedly stabbed his girlfriend late Thursday night. The incident happened just after 11 p.m. in the 5500 block of Country Road, not far from the intersection of Nolensville Road and Old Hickory Boulevard. According to police, the man stabbed his girlfriend in the hand and ran off. Authorities used a K9 unit to track the suspect and eventually found him and took him into custody. The suspect's identity was not immediately released.The victim is expected to be okay.