Deputy Spokesman of Afghanistan Interior Ministry announced that the explosion in a ceremony in Helmand, southern Afghanistan has claimed the lives of 3 and injured 31 more.
Some governmental officials were also killed in the incident, Afghan sources quoted Nosrat Rahimi as saying.
A member of provincial council, border guard police commander and head of economy department of the province were among those who were injured.
Some sources claimed that Helmand governor was also injured.
Taliban has claimed the responsibility of the attack.
Taliban is seriously against Nowruz celebrations and had earlier banned holding these ceremonies.
Three consecutive explosions shook Karte Sakhi, Kabul, the capital of Afghanistan, on Thursday morning.
Karte Sakhi is the place for commemorating Nowruz festival in Afghanistan.
The first explosion took place in Nowruz commutation place, the second one on a road leading to the same place from Kabul University, and, ten minutes later, the third one in Kabul University.
The incident has claimed the lives of 6 people and injured 23 more.
Iranian Foreign Ministry spokesman Bahram Qasemi denounced the recent terrorist attacks.
Qasemi sympathized with Afghan government, people and the bereaved families of the victims of the inhuman act which resulted in killing and injuring defenseless and innocent people.
He said Nowruz and its culture is a unifying factor among different groups and ethnicities in the region, adding that Daesh has targeted this unifying factor in the region.