Abdul Hafiz Khashi, security head of Jawzjan said the blast was caused by explosive attached into a motorcycle in Darzab district and as a result of the incident, four civilians were killed and 30 others were injured.
He added that all causalities of the incident are civilians.
According to the source the wounded people were shifted to nearby hospitals for treatment.
An individual was arrested in connection to the incident.
No group has claimed the responsibility of the attack yet.