It seems that sometimes in the last 24 hours an earthquake swarm started close to Eldey and Eldeyjarboða on the Reykjanes ridge. Largest earthquakes seems to be around Mw3,2 to Mw3,7 or in around that magnitude. Since it is close to impossible to see the earthquakes on the map in all the activity that is happening close to Keilir mountain and Fagradalsfjall mountain.
I don’t know if this earthquake swarm is connected to what is happening in Fagradalsfjall mountain and Keilir mountain. It seems unlikely, but this activity might have been triggered by that earthquake swarm. What is going on there is unclear. Since this is out in the ocean.