  We analyse multiwavelength observations of a western limb flare (C3.9)
occurred in AR NOAA 111465 on 30 April 2012. The high resolution images
recorded by SDO/AIA 304, 1600 \AA\ and Hinode/SOT H$\alpha$ show the activation
of a mini-filament (rising speed$\sim$40 km s$^{-1}$) associated with kink
instability and the onset of a C-class flare near the southern leg of the
filament. The first magnetic reconnection occurred at one of the footpoints of
the filament causing the breaking of its southern leg. The filament shows
unwinding motion of the northern leg and apex in the counterclockwise direction
and failed to erupt. A flux-rope (visible only in hot channels, i.e., AIA 131
and 94 \AA\ channels and Hinode/SXT) structure was appeared along the neutral
line during the second magnetic reconnection taking place above the kinked
filament. Formation of the RHESSI hard X-ray source (12-25 keV) above the
kinked filament and simultaneous appearance of the hot 131 \AA\ loops
associated with photospheric brightenings (AIA 1700 \AA) suggest the particle
acceleration along these loops from the top of the filament. In addition, EUV
disturbances/waves observed above the filament in 171 \AA\ also show a close
association with magnetic reconnection. The flux rope rises slowly ($\sim$100
km s$^{-1}$) producing a rather big twisted structure possibly by reconnection
with the surrounding sheared magnetic fields within $\sim$15-20 minutes, and
showed an impulsive acceleration reaching a height of about 80--100 Mm. AIA 171
and SWAP 174 \AA\ images reveal a cool compression front (or CME frontal loop)
surrounding the hot flux rope structure.
