  The Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) has
observed more than 80,000 solar energetic events since its launch on February
$12^{\rm th}$, 2002. Using this large sample of observed flares, we studied the
spatio-temporal relationship between succeeding flares. Our results show that
the statistical relationship between the temporal and spatial differences of
succeeding flares can be described as a power law of the form $R(t)\sim t^p$
with $p=0.327\pm 0.007$. We discuss the possible interpretations of this result
as a characteristic function of a supposed underlying physics. Different
scenarios are considered to explain this relation, including the case where the
connectivity between succeeding events is realised through a shock wave in the
post Sedov-Taylor phase or where the spatial and temporal relationship between
flares is supposed to be provided by an expanding flare area in the
sub-diffusive regime. Furthermore, we cannot exclude the possibility that the
physical process behind the statistical relationship is the reordering of the
magnetic field by the flare or it is due to some unknown processes.
