The incident reportedly took place in a playground in Khairkot district where scores of people had gathered.
No group including the Taliban militants has so far claimed responsibility behind the incident.
At least 57 people were killed and over 60 others were injured in a similar incident late in the month of November last year.
The incident took place in Yahya Khel district after a suicide bomber detonated his explosives among the spectators of a volleyball game.
The Afghan Intelligence – National Directorate of Security (NDS) blamed the Haqqani terrorist network for being involved in the attack.