Hand-held radios used by armed group Hezbollah detonated on Wednesday across Lebanon's south in the country's deadliest day since cross-border fighting erupted between the group and Israel nearly a year ago, stoking tensions after similar explosions of the militants' pagers the day before.

Turkey is revising its security measures for military communication devices following deadly blasts in Lebanon involving Hezbollah. These incidents, linked to Israel's conflict with Hamas, have heightened regional tensions.

Both Turkish and Lebanese officials are implementing or considering new security measures for communication devices following a multi-stage attack targeting Hezbollah members in Lebanon.