A suture anchor device and method for attaching soft tissue to bone includes an anchor body and a suture locking wedge movably disposed within the anchor body. Tension applied to one side of a suture causes the suture locking wedge to translate and rotate into a position which compresses the suture, thereby locking the suture in the anchor. A resilient or spring biasing member within the anchor device urges the suture locking wedge to compress the suture, facilitating suture locking.