The attack occurred on the outskirts of Ghazni, capital of the eastern province of Ghazni, which has seen regular fighting between the Taliban and government forces.
"Based on initial information, eight people were martyred, and 31 others were wounded," Interior ministry spokesman Tariq Arian said, noting the final toll would change.
Unverified photos circulating on social media showed what appeared to be holes from rockets punched into at least two separate buildings.
The move was immediately opposed by the Opposition Democratic Party of the President-elect Joe Biden, whose lawmakers described it as a threat to national security.
The journalist killed has been identified as Yama Siawash, who had worked with Tolo News. Kabul police said the explosion happened at around 7:30 am on Saturday morning. No group has so far taken responsibility for the attack.
Hamid Obaidi, a spokesman for the ministry of higher education, told AFP that gunfire erupted when government officials were expected to arrive for the opening of the book event.
Initiated through an open call earlier in the year by the Serendipity Arts Foundation and Les Rencontres d'Arles, supported by the French Institute in India, the grant Jury has shortlisted 10 applications from hundreds received
The UNAMA said that the anti-government elements are responsible for the majority of civilian casualties which stands at 58 per cent.
No group has claimed responsibility, but fighting between the Taliban and government has surged in recent weeks.
"The international community's response to global food insecurity has been dangerously inadequate."
Prosecutors said they would have recommended a harsher sentence for Yeo, who pleaded guilty to acting as an agent of a foreign government, but for his cooperation.
The United States first intervened in Afghanistan following the September 11, 2001 attacks and dislodged the Taliban regime, which had welcomed Al-Qaeda.
At least 15 people were killed and 42 others got injured in a car bombing outside a district office in Afghanistan's eastern Nangarhar province on Saturday.
Provincial police spokesman Farid Khan said most of the victims were Afghan security force members but several civilians were also among the dead.
Omer Zwak, a spokesman for the provincial governor in Helmand, said on Thursday a small child and three security personnel were wounded in the late Wednesday night attack.
The group's founder says she sees their whirling dance, known as Sema, as a way of carving out a space in the country's deeply conservative society.