English: Light curve of the optical emission from GRB 060614. The circles represent the observed data. At the expected time (10-20 days after the GRB), there is no sign of rebrightening due to a supernova. The light curve after ~0.3 day (blue solid line) has been decomposed in the sum of two components: the afterglow (blue dotted line) and the host galaxy (blue short-dashed lines). There is no need for a supernova component: the green dot-dashed line is the brightest supernova allowed by our data. This is very faint, and for comparison the yellow long-dashed line shows the light curves of SN 1998bw, the proto-typical SN associated with a GRB. The inset displays a zoom around the maximum of the putative SN, with the green solid line showing the contribution from the brightest supernova allowed by our data.