Equipo Nizkor - Death Toll Now At 31 In Kabul Bombing.

Public health ministry has revised the casualty toll in Sunday's ID distribution center bombing and confirmed at least 31 people were killed.

The ministry of public health spokesman Wahid Majroh confirmed shortly before 1pm that the death toll in Sunday's deadly bombing in Kabul has risen to 31.

The explosion happened at about 10am when a suicide bomber detonated his explosives at the entrance to an ID distribution and voter registration center in Dasht-e-Barchi are in the capital.

Over 50 people were also wounded in the attack.

Majroh said officials were working with hospital officials to identify the victims.

He said the wounded have been taken to a number of Kabul hospitals.

Security officials immediately corned off the area around the scene on Sunday morning but substantial damage was caused to buildings and cars in the area.

This was the fourth confirmed attack on the election process since voter registration started last Saturday.

However, two hours later, at about 12 noon, at least five people were killed and six others wounded in Pul-e-Khumri city in Baghlan province after an IED was detonated at a voter registration center - bringing the number of confirmed attacks against the election process to five in only six days.

Following the Pul-e-Khumri explosion, President Ashraf Ghani posted a tweet saying: "I condemn the heinous terrorist attacks in Kabul and Pul-e-Khumri. I wish Allah's mercy upon those who martyred, speedy recovery to the wounded, and convey my deep condolences to victims' families. I instructed relevant institutions to provide support and care to those affected."

The Kabul incident meanwhile happened while dozens of people were at the center applying for their paper ID cards when the suicide bomber detonated his explosives.

Following the explosion, the immediate area was littered with documents, testimony to the number of people who had been waiting in line for their ID's.

Sunday's attacks come after three others on election centers in the past week.

On Friday, April 20, unknown armed men attacked a voter registration center in Qala-e-Naw, the center of Badghis province, where a police officer assigned to maintain security was killed.

On Thursday, April 19, unknown armed men attacked two police force members in Jalalabad City who were guarding a voter registration center.

The two policemen were killed in the ensuing gunfight.

On Tuesday April 17, unknown armed men attacked a voter registration center in Ghor province and kidnapped three IEC employees and two policemen.

Ghor police spokesman said the attackers were Taliban.