- At least 36 killed in Kabul blast
- A relative of former Afghan president was killed in Kandahar
claimed responsibility for the Kabul attacks, which killed at least 36 people and injured 76 others in the capital, according to Saleem Rasooli, head of Kabul hospitals.
Separately, an explosion in Kandahar killed at least 11 people and injured 14 others, Samim Khpalwak, the provincial governor's spokesman told CNN. The victims included the deputy governor of Kandahar, the spokesman said.
Five Emirati humanitarian workers were also among those killed in the Kandahar attack, the official Emirati news agency WAM reported. The president of the United Arab Emirates declared three days of mourning for the victims.
Others wounded included the Emirati ambassador to Afghanistan and the Kandahar province governor.
The UAE said it regarded the incident as a terror attack.
In Helmand province, a suicide bomber killed at least seven Afghans, including both civilian and military personnel, the National Security Council said.
The US Embassy in Kabul condemned the "heinous' blasts in the three areas.
The UN said those responsible for carrying out the attacks must be held held accountable.
"Such unprincipled, unlawful and deplorable attacks cause immense human suffering and make the peace that Afghans need and deserve even more difficult to achieve," said Pernille Kardel, the Secretary-General's Deputy Special Representative for Afghanistan.
"Those responsible for these attacks must be held accountable," said Kardel.