Fourteen others were wounded in the strike which happened in Hazara Qarluq area, 12 kilometers from provincial capital Taluqan, said Javad Hijri, a spokesman for provincial governor.
First Vice President Amrullah Saleh, however, rejected the report of children deaths, saying the casualties were those who had killed security forces yesterday.
The incident comes a day after 47 security forces were killed by Taliban militants in the province.