Security forces said they had foiled a major terrorism bid after the apprehended a vehicle laden with explosives and weapons close to the Pak-Afghan border in Chaman on Saturday morning.
A security official, who declined to be named, told Dawn that the seizure was made during a raid conducted by security forces near the border with Afghanistan.
Bomb disposal experts were called in to defuse the explosives inside the vehicle.
One suspect was arrested and shifted to an undisclosed location for interrogation.
Security officials said the 'terrorists' had planned to smuggle the weapons and explosives to Quetta, the provincial capital of Balochistan, for a "major terror attack".
"The timely information [we received helped us] foil [the] terror bid", an official said.
"An investigation is underway," he said, refusing to provide further information about the identity of the accused.
Security officials were unwilling to disclose the quantity of explosives and the number of weapons seized in the raid, citing the ongoing investigation.
Security has been tighten around the porous Afghan border to stop the flow of terrorists and weapons from neighboring Afghanistan after a wave of terrorist attacks across the country took more than 100 lives.