At least 73 people have been killed and over 2,750 injured after a massive explosion erupted in the Beirut port area, damaging buildings and vehicles in Lebanon.

Lebanon’s health minister, Hamad Hassan said that the figures were “preliminary estimates,” while adding that the blasts had caused a ‘very high number of injuries’ and huge damage. 

“It is a disaster in every sense of the word,” he said in an interview with several television channels while visiting a hospital in the Lebanese capital.

The explosion happened at around 6pm local time at the city’s port, where warehouses are believed to contain explosive materials.

Dramatic footage posted on social media shows smoke billowing from a building in the port area before an enormous fireball explodes into the sky, sending a vast shockwave across the city that was heard and felt as far away as Cyprus – more than 200km (180 miles) away.

The afternoon explosion destroyed several vehicles and buildings including the house of former PM Saad Hariri, who has been confirmed safe by his party.

Beirut’s Hotel Dieu Hospital is said to have admitted more than 500 wounded patients and no longer receiving more, while Lebanon’s Red Cross confirmed many others were still trapped in their homes.

General Security chief Abbas Ibrahim said: ‘It appears that there is a warehouse containing material that was confiscated years ago, and it appears that it was highly explosive material.’ 

Prime Minister Hasan Diab has declared Wednesday, August 5, a day of mourning, and President Michel Aoun called for ‘urgent’ defence council talks. 

Israel has denied any involvement amid escalating tensions with the militant group Hezbollah along the country’s southern border. 

On that ground Israel is offering humanitarian medical assistance to Lebanon following the massive blast in Beirut Tuesday afternoon, even though the two countries have no diplomatic relations.

Following the announcement, Israel’s President Reuven Rivlin tweeted, “We share the pain of the Lebanese people and sincerely reach out to offer our aid at this difficult time.”

The US Embassy in Beirut as urged those in the area of the explosion to “stay indoors and wear masks if available” due to reports of toxic gases released from the blast.