An Israeli strike killed a commander of Hezbollah's elite Radwan force in south Lebanon on Monday, according to security sources familiar with the group's operations in the country.
It's one of the most high-profile attacks on its senior officers in three months of hostilities with Israel.
Wissam Al Tawil, the deputy head of a Radwan unit, and another Hezbollah fighter were reportedly killed when the car they were in was struck in the village of Majdal Selm, some 6 km from the border.
One of the security sources called Tawil's death "a very painful strike". Another said, "things will flare up now."
Hezbollah says its campaign aims to support Palestinians in the Gaza Strip. The hostilities between the group and Israel have largely been contained to areas near the border.
Tensions spiked higher last week when an Israeli strike killed deputy Hamas chief Saleh al-Arouri in Beirut's southern suburbs, an area controlled by Hezbollah. Israel has neither confirmed nor denied its responsibility for that attack.
Hezbollah on Saturday said it had hit a key Israeli observation post with 62 rockets as a "preliminary response" to Arouri's killing.
Prince Harry said on Friday that he wanted reconciliation with the British royal family but his father King Charles will not speak to him over a row over his security and he did not know how long the monarch, who has cancer, would live.
A magnitude 7.4 earthquake struck Drake Passage between Cape Horn and Antarctica at a depth of 10 km (6 miles) on Friday, the United States Geological Survey said.
A ship with humanitarian aid and activists for Gaza was bombed by drones while in international waters off Malta early on Friday, its organisers said, and the Maltese government said after a rescue operation that everyone on board was safe.
A power outage hit several regions of Indonesia's resort island of Bali on Friday and efforts were underway to restore services to those affected, state utility Perusahaan Listrik Negara said.
A Russian drone attack late on Thursday set buildings ablaze in Ukraine's southeastern city of Zaporizhzhia, injuring 29 people, regional governor Ivan Fedorov said.