According to Levies officials, the incident took place in the Kanjo Saghari area of Sui, where an improvised explosive device (IED) planted along the roadside was detonated with a remote control, reported Dawn News.
The deceased individuals were identified as Washo and Zahid.
The identity of the injured person was revealed as Sada.
Local authorities shifted the bodies to a nearby hospital.
An investigation into the incident is currently underway.