A blast outside a mosque in the city of Herat in western Afghanistan on Friday killed at least 18 people including a high-profile pro-Taliban cleric in what authorities said was an attack.
"18 have been killed and 23 have been injured," spokesman for the interior ministry Abdul Nafi Takor told Reuters.
Herat's police spokesman Mahmood Rasoli said that Mujib Rahman Ansari - a cleric - was among the dead along with some of his guards and civilians as they approached the mosque for Friday prayers.
The Taliban's spokesperson Zabiullah Mujahid, in a Tweet expressed "strong condolences" over Ansari's death and said his attackers would be punished.
Mujib Rahman Ansari had spoken strongly in defence of the Taliban at a large gathering of thousands of scholars and elders organised by the group in late June, condemning anyone who stood against their administration.
The Taliban say they have improved security in the country since taking power around a year ago, but there have been several blasts in recent months, some of them targeting busy mosques during prayers.
The United Nations has raised concerns about the growing number of attacks and some blasts have been claimed by a local branch of the IS.
The was no immediate claim of responsibility for Friday's explosion.
North Korea fired a short-range ballistic missile on Thursday towards the sea off the peninsula's eastern coast, South Korea's military said, the first such launch in more than 40 days after a series of weapons tests earlier this year.
A wildfire prompted an evacuation alert on Wednesday about 30 km (18.64 miles) from Vancouver, one of Canada's largest metropolitan areas, as blazes in Western Canada continued to spread due to dry and hot weather.
Israel said two of its soldiers were killed in southern Lebanon on Wednesday while Lebanese authorities said Israeli retaliatory attacks killed at least one person, a flare-up in violence that coincided with the latest round of talks between the two countries.
Italy took the unprecedented step of placing all its major cities on the highest level of health alert due to high temperatures on Thursday while Hungary turned off the lights at some of its best-known buildings to save energy as a heatwave maintained its grip on large parts of Europe.
Rescuers worked on Thursday to douse fires and clear debris in Ukraine's eastern city of Balakliia after Russian strikes on homes killed three overnight, authorities said on the Telegram messaging app.