Despite the announcement of a two-week ceasefire between the United States and Iran, Lebanon on Wednesday saw one of the biggest strikes in the country

As tensions escalate in Lebanon, Al Jazeera reported on Thursday that the country declared a day of mourning after a wave of Israeli strikes killed at least 254 people and injured more than 1,165 in a single day on Wednesday

The US and Iran both claimed victory after reaching the agreement, and world leaders expressed relief, even as more drones and missiles hit Iran and Gulf Arab countries

At the same time, Israel intensified its attacks on the Hezbollah militant group in Lebanon, hitting commercial and residential areas in Beirut

Iranian Foreign Minister Abbas Araghchi insisted that an end to the war in Lebanon was part of the ceasefire deal, but Israeli Prime Minister Benjamin Netanyahu and US President Donald Trump said the truce did not cover Lebanon

Lebanon declared a national day of mourning on Thursday after Israeli strikes pummelled the country, killing nearly 200 people

There had been conflicting messages about whether the fighting in Lebanon was included in the truce, with Israel insisting that it was not

Hours later, Hezbollah said it had fired rockets towards Israel in response to what it called a violation of the US-Iran truce

In Lebanon, where UN rights chief Volker Turk called the scale of killing "horrific", strikes across the capital Beirut that came without warning triggered horror and panic

"People started running left and right, and smoke was billowing," said Ali Younes, who was waiting for his wife near Corniche Al-Mazraa, one of the areas targeted

Iran's Revolutionary Guards warned they would "fulfil our duty and deliver a response" if Israel did not cease its strikes, while Hezbollah said it had a right to respond

"The world sees the massacres in Lebanon," Iranian Foreign Minister Abbas Araghchi said in a post on X

Israel also hit Beirut's southern suburbs and southern Lebanon, where Hezbollah holds sway, in parallel with strikes on the east

First responders and residents gather at the site of an Israeli airstrike in Beirut's Tallet al-Khayyat neighbourhood.