At least 12 people were killed, including an 11-year-old boy and a 9-year-old girl, and more than 2,700 people injured in the coordinated explosions of pagers that belonged to Hezbollah members. A day later,

It took years, three different shell companies, and an explosive called pentaerythritol tetranitrate, according to reports.

The unprecedented attack, followed by explosions of walkie-talkies, comes after Israeli officials warned about escalating tensions on the Lebanese border.