Bardarbunga volcano (Iceland): magnitude 3.8 earthquake, likely not related to magma movements

A magnitude 3.8 earthquake followed by dozens of small aftershocks occurred yesterday at 3 km depth under the volcano's northeastern caldera rim (located under the ice cap).
While it is possible that such earthquakes are caused by shallow magma intrusions, the present quakes at Bardarbunga are more likely result of volcano-tectonic movements, in this case the continuing subsidence of the caldera (a so-called slow caldera collapse) which has been going on since the large 2014-15 Holuhraun flank eruption.
This also seems to reflect the opinion of Icelandic Met Office's seismologists according to a local press article.