Since hundreds of pagers exploded almost simultaneously across Lebanon on Tuesday, killing multiple people and injuring thousands, CNN has learned the explosions were the result of a joint operation between Israel’s intelligence service,

Lebanese officials said that 12 people had been killed on Tuesday, including a young girl. Hezbollah said that at least eight of its fighters were among the day’s dead and more than 2,700 people were injured in Lebanon — including Iran’s ambassador to the country.

Israel launched a series of strikes on Hezbollah targets Thursday as the war against the Lebanon-based group widened in the wake of two consecutive days of deadly explosions triggered in wireless devices.

Heightened Anxiety in Lebanon After Wireless Device Explosions transcript We started receiving text messages about pagers exploding. Again, we were scared. We had pagers in the hospital. So just like that,