The provincial government media office in a statement said Thursday that the campaign manager of ex-presidential runner Gul Agha Sherzai was shot dead by unknown gunmen riding a motorcycle.
The statement furhter added that the incident took place on Wednesday night in Lashkargah city.
Malik was also a member of the Social Council of Nawa district, the statement added.
No group including the Taliban militants has so far claimed responsibility behind the attack.
In the meantime, the provincial government media office said an investigation has been launched and Afghan forces are looking to arrest those involved behind the attack.
Helmand is among the volatile provinces in southern Afghanistan where anti-government armed militant groups are actively operating and frequently carry out insurgency activities.