Aqil, who has reportedly been killed by an Israeli airstrike in Beirut, had risen through the ranks of the organisation

• Middle East crisis – latest news updates

Ibrahim Aqil, who is reported to have been killed by an airstrike in Beirut on Friday, was one of the last founder members of Hezbollah’s military wing to have survived more than 40 years of conflict with Israel.

Aqil, who was in his early 60s, had risen through the ranks and reached a senior position in the organisation. Exact details of his role are unclear, but the Israel Defense Forces described him as “the head of the Hezbollah terrorist organization’s operations team, the acting commander of the Radwan [special forces] unit”.

On Tuesday, dozens of people were killed when electronic pagers blew up. The next day walkie-talkies exploded. What was the goal of the attacks? William Christou reports

On Tuesday, William Christou, a journalist reporting from Beirut for the Guardian, began hearing about simultaneous explosions across the city. Then videos began to emerge of small blasts in shops, cars and people’s homes. The death toll began to rise. Then came the extraordinary reason: electronic pagers, used by members of Hezbollah to communicate, had blown up, wounding their owners and whoever was nearby.

Israel was blamed by its critics and supporters alike and questions multiplied: how could such an attack have been carried out, and why now? Israel and Hezbollah have been trading attacks over the Lebanese border since the beginning of the war on Gaza, but this operation took everyone by surprise. Then came more deadly explosions – this time walkie-talkies blew up.

Hassan Nasrallah due to give televised speech, as US warns all sides in Middle East against escalation ‘of any kind’

• Middle East crisis – latest news updates

Hezbollah’s leader, Hassan Nasrallah, will seek to rally his followers and inspire new defiance of Israel in a much-anticipated televised speech on Thursday afternoon, after the Lebanon-based militant Islamist organisation was thrown into disarray by successive waves of unprecedented attacks that have been blamed on Israel.

On Tuesday, thousands of pagers used by Hezbollah exploded simultaneously, killing 12 people, including two children, and wounding up to 2,800 others across Lebanon. A day later, 25 people were killed and more than 450 wounded when walkie-talkies exploded in supermarkets, on streets and at funerals, stoking fears that a full-blown war between Hezbollah, which is backed by Iran, and Israel could be imminent.

What sources are saying about the techniques behind the simultaneous explosion of thousands of devices across Lebanon

In an unprecedented security breach, thousands of pagers and walkie-talkie radios belonging to members of Hezbollah detonated across Lebanon in simultaneous explosions on Tuesday and Wednesday, killing at least 26 people and wounding thousands of others.

Hospitals across Lebanon were overwhelmed with an influx of patients after the pager attack on Tuesday, and a field hospital was set up in the southern city of Tyre to accommodate the wounded.