Yesterday (01-October-2013) at 19:41 UTC an earthquake with the automatic magnitude of 5.2 took place deep on the Reykjanes Ridge. This earthquake was around 1171 km away from Reykjavík so it is deep on the Reykjanes Ridge.
It is impossible to know if this was one off event or part of an earthquake swarm in the area. It is just too far off any seismometer network for us to know. It is my guess that this earthquake was part of local earthquake swarm in the area, but that is just a guess. More information about this earthquake can be found here on EMSC website.