Schools in Beirut were closed on Monday after Israeli strikes on the Lebanese capital killed six people including, Hezbollah's spokesman, the latest in a string of attacks targeting group members.
Israel escalated its bombardment of Hezbollah strongholds in late September, vowing to secure its northern border with Lebanon to allow Israelis displaced by cross-border fire to return home.
Sunday's strikes hit densely populated districts of central Beirut that had so far been spared the violence engulfing other areas of Lebanon.
Six people were killed in the strikes, according to Lebanese health ministry figures, including Hezbollah media relations chief Mohammed Afif, the group and Israel's military said.
The strikes prompted the education ministry to shut schools and higher education institutions in the Beirut area for two days.
Children and young people around Lebanon have been heavily impacted by the war, which has seen schools around the country turned into shelters for the displaced.
Israel widened the focus of its war from Gaza to Lebanon in late September, nearly a year into the conflict in Gaza that was sparked by Hamas's October 7, 2023 attack.
In support of its Palestinian ally, Hezbollah launched low-intensity strikes on Israel after the attack, forcing about 60,000 Israelis to flee their homes.
With Hamas weakened but not crushed, Israel escalated its battle against Hezbollah, vowing to fight until victory.
Lebanese authorities say more than 3,480 people have been killed since October last year, with most casualties recorded since September.
Israel says 48 soldiers have been killed fighting Hezbollah.
Israeli strikes have killed senior Hezbollah officials including its leader Hassan Nasrallah in late September.
The group's spokesman Afif was part of Nasrallah's inner circle, and one of the group's few officials to engage with the press.
Another strike hit a busy shopping district of Beirut, sparking a huge blaze that engulfed part of a building and several shops nearby.
Lebanon's National News Agency said the fire had largely been extinguished by Monday morning, noting it had caused diesel fuel tanks to explode.