The death toll from Beirut's massive explosion on 4 August has climbed to 171, a health ministry spokesperson said.

The new figure, up from 160, came a week since the blast destroyed swathes of the Lebanese capital, wounding more than 6,000 and temporarily displacing 300,000 people from their homes.

A little boy helps clean a damaged car in Beirut

At 6.08pm, church bells rang and mosques called for prayer at the precise moment the massive explosion detonated last week.

Near the port, several hundred Lebanese gathered, mostly dressed in white, some of them from the devastated nearby Gemmayze neighbourhood. 

Waving placards with the names of victims, their nationality and a green cedar, the emblem of Lebanon, they marked the tragic moment the blast blew up entire neighbourhoods.

Some were crying, others held back their tears with great difficulty.

Ali Noureddin lost his 27-year-old brother Ayman in the blast.

"My brother died because of state negligence and  corruption", he said, holding a photo of Ayman.

"Change will only happen when the entire regime changes. But I hope all these young people here and my brother's death can bring about change".

On a giant screen, videos of the blast were shown, along with scenes of the panic that followed, in the harbourside districts that have been transformed into fields of ruins. 

"We will not mourn, we will not wear black until we bury those in power," said one of the speakers as the list of victims' names scrolled down the screen. 

"All means all," the mourners chanted to call for the departure not just of the government but of the entire political class they blame for the tragedy.