The march was triggered by a car bomb in Helmand on March 23 that killed at least 14 people and wounded dozens.
A car bomb killed at least 26 people at a gathering of Taliban and Afghan armed forces in the eastern city of Nangarhar on Saturday, an official said, as soldiers and militants celebrated an unprecedented Eid ceasefire.
A motorcycle suicide bomber killed at least eight people near a gathering of Muslim clerics in the Afghan capital after they had issued a fatwa against suicide bombings, officials said, in the latest in a series of attacks to hit Kabul.
Both the Taliban and the Islamic State group have stepped up their attacks on Kabul, making the capital the deadliest place in the country for civilians in recent months.
Taliban fighters battled police and troops in the western city of Farah overnight, officials said, as security forces struggled to regain control of a city that has been under growing pressure from the militants for months.
Suicide bombers and gunmen launched apparently coordinated attacks on two Kabul police stations Wednesday, killing at least five people, with security forces still searching for several assailants as the city braces for more violence.
Gunmen set off at least three explosions in the Afghan capital, Kabul, on Wednesday and then battled the security forces from buildings they occupied in the latest in a spate of violence to rock the city.
Afghan security forces arrested seven suspected militants who were planning to attack a government-run hospital and an interior ministry office in the capital Kabul on Thursday, officials said.
The bomber appeared to have deliberately targeted journalists, presenting a press card to police before joining the group standing near the first blast site.
At least 21 people were killed, including Agence France-Presse chief photographer Shah Marai and three other journalists, when two suicide blasts ripped through Kabul on Monday ...