AIA 131 Å images showing the eruption in the source region. The top row shows the direct time sequence images, while the bottom row shows the corresponding based-difference images. The dashed blue curve in each panel shows the position of the high-lying loop system at 17:12:18 UT (see Fig. 2b). The red contours in panel d show the RHESSI hard-X-ray source in the energy band of 12–25 KeV. The red arrows in panels f–h indicate the outward expanding reconnected loops.