(Tulsa, OK) -- Tulsa Police are investigating a shooting.  It's believed to have happened at 1,200 North Boston Monday afternoon. Officer Jason Willingham says they responded to that location on a shots fired call but did not find a victim.  A victim later showed up at Hillcrest Medical Center.  Willingham says the victim was shot once in the abdomen and did walk in on his own. Willingham says they have found some witnesses and are now questioning them.