(Portland, OR)  --  An investigation is ongoing into an early morning shooting that left one man critically injured.  Portland police say officers responded to the area of Southeast 7th Avenue and Southeast Stark Street in the Buckman neighborhood around 2:30 this morning after receiving a report of shots fired.  Officers discovered the victim shot inside a vehicle.  Police say the man had just left a bar with a friend and was driving down Southeast Start Street when someone opened fire.  There's no word yet on what the motive might be.