Israel’s military killed two Hezbollah members who were planting explosives along the border over the weekend, Israel’s military and an official with a Lebanese group said.

The official with a Lebanese group said the two members of Hezbollah were killed Sunday and their bodies were taken by Israeli troops because they were too close to the fence along the tense frontier. The official spoke Friday on condition of anonymity because he was not authorized to speak to the media.

The head of the World Health Organization says it is working with Lebanon’s Health Ministry as it deals with those wounded by exploding communications devices.

WHO Director-General Tedros Adhanon Ghebreyesus said the strikes have “severely disrupted Lebanon’s already-fragile health system.”

The UK’s top diplomat is urging British nationals to leave Lebanon.

Foreign Secretary David Lammy said the situation could deteriorate rapidly after consecutive rounds of explosive attacks that hit devices carried by Hezbollah members, killing 37 people and wounding around 3,000 others.

Israel is accusing Iran and Hezbollah of bombarding millions of Israelis with threatening text messages as the conflict between the Israeli military and the Lebanese militant group escalated.

Israel's National Cyber Directorate said Thursday that a flood of Hebrew-language text messages popped up on cellphones nationwide, falsely purporting to be a communication from the Israeli Home Front Command.

Israeli Defense Minister Yoav Gallant has said Hezbollah would “pay an increasing price” as Israel claims to be seeking to make conditions near its border with Lebanon safe enough for residents to return.

"Hezbollah is feeling chased and the sequence of our military operations will continue," Gallant added, in a possible hint that Israel was behind the deadly pager and walkie-talkie blasts that rocked Lebanon on Tuesday and Wednesday leaving 37 people dead and around 3,000 injured, many of them severely.

Israeli security officials say an Israeli citizen has been indicted for involvement in an Iranian assassination plot against top Israeli leaders, including Prime Minister Benjamin Netanyahu.

A statement from the Shin Bet internal security agency on Thursday said that the citizen was recruited by Iranian intelligence to “carry out terrorist activities” on Israeli soil and “promote assassination attacks” on Netanyahu, Defense Minister Yoav Gallant and the head of the Shin Bet, Ronen Bar.

The Iranian ambassador to Lebanon, who was injured in the exploding device attacks this week, has been transferred to Tehran, the Iranian Embassy said Thursday.

Ambassador Mojtaba Amani's general health is “very good," the embassy said in a statement. Amani along with some 90 injured Lebanese citizens were transferred to Tehran on Wednesday night, it added.

Doctors in Lebanon spoke of horrific eye injuries and finger amputations, a day after Hezbollah paging devices exploded across the country, killing 12 people and wounding up to 2,800.

"The injuries were mainly to the eyes and hands, with finger amputations, shrapnel in the eyes -- some people lost their sight," said doctor Joelle Khadra, who was working in emergency at Beirut's Hotel-Dieu hospital.

Bulgarian authorities rejected claims that exploding devices have been shipped through the territory of the Balkan country.

“No customs operations with communication equipment (pagers) have been carried out through the territory of Bulgaria,” the state agency for national security said in a statement on Thursday.

With Israel's defense minister announcing a "new phase" of the war and an apparent Israeli attack setting off explosions in electronic devices in Lebanon, the specter of all-out combat between Israel and Hezbollah seems closer than ever before.

Hopes for a diplomatic solution to the conflict appear to be fading quickly as Israel signals a desire to change the status quo in its north, where it has exchanged cross-border fire with Hezbollah since the Lebanese group began attacking on Oct. 8, a day after the war's opening salvo by Hamas.