Israel's military said it had destroyed a major underground Hezbollah base in a strike that produced a large explosion. The detonation was recorded by the US Geological Survey (USGS), which said the blast registered as equivalent to a magnitude 4.1 earthquake.
The Israeli statement described the target as a substantial subterranean facility linked to Hezbollah, but independent verification of the claim was not immediately available. The scale of the explosion, as captured by seismic monitoring agencies, drew attention because of both its intensity and its potential implications for the densely populated border region.
Underground infrastructure has long been used in the region to protect personnel and materiel from aerial and artillery strikes. Military analysts say such sites can require powerful ordnance to neutralise and have the potential to cause large blasts when destroyed, though the precise munitions and methods used in this incident have not been disclosed.
The incident is likely to add to tensions between Israel and Hezbollah, a Lebanese armed group and political movement that has previously engaged in cross-border hostilities with Israel. Officials and international observers typically monitor such developments closely for signs of escalation, while humanitarian concerns arise when strikes occur near civilian areas.
Both the Israeli claim and the seismic data are being followed by regional authorities and monitoring organisations. At this stage, details such as the exact location, the extent of damage, and any casualties have not been independently confirmed.