The incident left two other cops hurt.
The blast occurred when the vehicle was patrolling the area near Jhalawan Complex.
“Unknown people had placed a magnetic bomb on the police vehicle, and detonated with a remote control, resulting in the death and injury of four security personnel,” Fahad Khosa, Khuzdar’s senior superintendent of police, told Khaama Press.
Security forces rushed to the spot and launched a search operation in the region.
No group has claimed responsibility for the incident so far.
Tehreek-e-Taliban Pakistan (TTP) and Balochistan Liberation Army (BLA) earlier launched several attacks in the region.