An IDF tank battalion commander and three soldiers were killed overnight in a Hezbollah attack in southern Lebanon, the military announced.

The officer was named as Lt. Col. Dor Gedalia Ben Simhon, 32, commander of the 52nd Battalion in the 401st Armored Brigade, from Beit HaShita.

The names of the three other soldiers are expected to be released later.

The incident took place shortly after midnight in the southern Lebanese village of Kfar Tebnit, where a suspected drone or anti-tank missile struck the commander’s tank, killing all four crew members.

The IDF says it is still investigating the exact cause of the explosion.

Ben Simhon had taken command of the battalion after the previous commander was seriously wounded in southern Lebanon in April.