Provincial spokesperson Wahida Shahkar confirmed the incident and said at least four personnel of the National Directorate of Security (NDS) lost their lives in the explosion.
She said the incident took place earlier today in the vicinity of Khalazai area of the province and as a result four NDS personnel also sustained injuries.
According to Shahkar the explosion was triggered by an improvised explosive device planted on a roadside.
No individual or group has so far claimed responsibility behind the incident.
The anti-government armed militants including Taliban frequently use improvised explosive device to target the security forces but in majority of such attacks the ordinary civilians are also targeted.
In the meantime, a security source at least four intelligence personnel and a civilian were killed in the explosion.
Parwan has been among the relatively calm provinces in the North of Afghanistan but the security situation of the province has deteriorated during the recent years.