Three tribal leaders were killed on Tuesday in a bombing that targeted a hotel room in the city of Jalalabad in the Nangarhar province in eastern Afghanistan, officials said.
Two people were wounded in the attack.
Attaullah Khogyani, a spokesman for the provincial governor, said the explosion went off on the second floor of a hotel where tribal elders were staying.
They were in Jalalabad for a meeting about a new electronic identity cards being introduced by the central government.
Another bomb was discovered and defused by police forces near the hotel, Khogyani added.
There were no further details and no one immediately claimed responsibility for the bombing. Both the Taliban and Afghanistan's ISIS affiliate are active in Nangarhar.
The movement has claimed several attacks in Jalalabad, most recently last month when it targeted an office of the Save the Children aid group in the city.
Meanwhile, in western Farah province, attacks on police checkpoints killed eight policemen.
Mohammad Naser Mehri, spokesman for the Farah governor, said two police checkpoints came under attack overnight, one in Bala Buluk district and one near Farah city.
Mehri added that 13 insurgents were also killed in the fighting, which started on Monday night and lasted till early Tuesday morning.
Qari Yusouf Ahmadi, a Taliban spokesman claimed responsibility for the attacks in Farah. In statement sent to the media, he claimed the Taliban captured 10 policemen as hostages.
The abductions were not confirmed by provincial authorities.
Also Tuesday, two gunmen opened fire at the police, killing one officer in eastern Kapisa province. Provincial spokesman Qais Qaderi said both gunmen were killed and five suspects were arrested by police forces in Mohmood Raqi, the provincial capital.
No one claimed responsibility for the attack in Kapisa, but the Taliban have stepped up attacks on security forces across Afghanistan.