Gunmen killed six people, including the head of a Japanese aid agency, on Wednesday in an attack on their vehicle in Jalalabad in eastern Afghanistan, officials said.
Twin explosions on Saturday in the eastern Afghanistan city of Jalalabad killed three people and injured 20 others, local officials said.
A suicide attacker killed at least three people on Saturday by detonating explosives near the office of Afghanistan's election commission in the eastern city of Jalalabad, where dozens of protesters had gathered, an official said.
At least 15 people were killed on Tuesday in Afghanistan's eastern city of Jalalabad when gunmen stormed a government building, trapping dozens inside after a suicide bomber blew himself up at the entrance gate, officials and witnesses said.
Ten others were wounded in the second attack in Jalalabad city in as many days, Nangarhar provincial governor spokesman Attaullah Khogyani said.
The explosion in the eastern city of Jalalabad also left at least four people wounded and set a nearby petrol station alight.
The blasts exploded among spectators crowded into the stadium at around 11pm on Friday evening as they watched the local "Ramadan Cup".
There were two explosions near the city's directorate of finance, the Nangarhar provincial governor's spokesman Attaullah Khogyani said, adding that "a number of attackers" had entered the building.
Gunmen blasted their way into Save the Children's office in Afghanistan's restive east on Wednesday, killing at least two people and wounding 14 others in the latest attack on a foreign aid group in the war-torn country.