Angry residents demand answers as Afghan capital mourns for scores of people killed in largest attack in years.

Kabul residents are mourning the loss of family members, friends and colleagues, a day after a massive truck bomb in the Afghan capital killed at least 90 people and wounded more than 450 others in one of the worst attacks in recent years.

Scores of people waited in hospitals on Thursday to learn the status of loved ones wounded in an attack that killed mostly civilians, including women and children, but also Afghan security guards.

A suspected suicide bomber drove into Kabul’s heavily guarded diplomatic quarter during the morning rush, leaving behind chaos and destruction.

The sound of the bomb, which went off near Kabul’s busy Zanbaq Square, reverberated across the city, with residents comparing it to an earthquake.

READ MORE: Kabul blast felt like an earthquake, say witnesses

Mohammad Ismail Kawusi, health ministry spokesman, told the DPA news agency that the identification process of victims had resumed on Thursday.

However, “some bodies will probably never be found, they were torn to pieces”, he said, adding that some of them were hardly identifiable.

Sorrow, anger

“For God’s sake, what is happening to this country?” said Ghulam Sakhi, a shoemaker whose shop is close to the site of the blast.

“People leave home to fetch a loaf of bread for their children and later that evening, their dead body is sent back to the family,” Sakhi told the Reuters news agency.

READ MORE: Social media users react to ‘horrific’ Kabul bombing

There was no claim of responsibility for Wednesday’s attack, though Afghanistan’s spy agency blamed the Taliban-allied Haqqani network and neighbouring Pakistan for the blast.

Angry citizens demanded answers from the government over the perceived intelligence failure leading to the attack, which underscores spiralling insecurity in the country.

“For how long will we have to tolerate this bloodshed in our country?” a sobbing resident asked on local Tolo News.

“I have lost my brother in the blast, and the government is constantly failing to provide us with security.”

Al Jazeera’s Qais Azimy, reporting from Kabul, said that people across the Afghan capital were grieving.

“Anyone you ask here on the street will tell you that either they lost someone in their family or someone that they know.

“People are complaining about the government also. They are asking for the resignation of Afghan security officials, calling this attack a security and intelligence failure.”

Powerful explosion

The explosives were hidden in a tanker truck used to clean out septic systems, according to Najib Danish, deputy spokesman for the interior minister.

The trucks are common in Kabul, a city of nearly four million people with no sewage system that mostly depends on septic tanks, and where open sewers are common.

Afghan security forces and residents stand near the crater left by the truck bomb attack in Kabul [Wakil Kohsar/AFP]

The blast gouged a crater of about five metres deep in an area close to many foreign embassies, which are protected by their own security personnel as well as Afghan police and National Security Forces. The nearby German Embassy was heavily damaged.

Also in the area is Afghanistan’s foreign ministry, the presidential palace and its intelligence and security headquarters, guarded by soldiers trained by the US and its coalition partners.

IN PICTURES: Scenes of carnage in Afghan capital

Afghan President Ashraf Ghani condemned the bombing, the deadliest single attack in Kabul since the Taliban were toppled from power in a 2001 US-led invasion, as a “war crime”.

Afghanistan’s war, the longest ever involving US troops, has shown no sign of letting up and the introduction into the battle of an Islamic State of Iraq and the Levant (ISIL, also known as ISIS) affiliate has made the country only more volatile.