There were no injuries reported in the incident.
The chief minister was on his way to the camp office in Awaran district, which was set up to carry out relief work in the quake-hit region, when a rocket fired by unknown militants landed at a distance from the convoy.
Dr Malik Baloch was accompanied by several provincial secretaries at the time of attack.
A heavy contingent of security personnel reached the site of attack and cordoned off the area and security was further tightened in the area during the chief minister's visit.