Two members of one family were murdered by unknown men in Mazar-e-Sharif on Friday night, police said Saturday.
Balkh police said the incident happened in Kart-e-Zarat area of Mazr.
Police spokesman Sherjan Durani said two people have been arrested in connection with the murder. He said the motive for the killings was not yet clear.
Police have not however confirmed the identities and gave no further information about the incident.
Balkh police also confirmed another shooting in Mazar, which they said took place on Thursday and claimed the life of a man. No further details were released on this incident.
In yet another incident, this time in Sar-e-Pul, a 30-year-old man allegedly killed his mother during a domestic dispute, police confirmed.
Police spokesman Zabiullah Amani said the incident occurred in Sancharak district of the province.
Amani said the man, Kafeyatullah, attacked his 50-year-old mother with an axe. She was taken to hospital but later died from her injuries.
The son has been arrested, Amani added.
This comes after Parwan provincial officials said a young man on Tuesday shot and killed four of his close relatives in Totomdara Bala village before fleeing the area.