An abandoned car filled with arms and explosives was found near the Chak Shehzad residence of former military ruler General (r) Pervez Musharraf on Tuesday.
The Suzuki Alto car was taken into custody by security personnel as probe into the incident was launched.
Former president Musharraf is currently facing life threats from the Tehrik-i-Taliban Pakistan (TTP) who had set up a special death squad to target the former Pakistani president upon his arrival.
The All Pakistan Muslim League (APML) chief is under detention on judicial remand at his Chak-Shehzad residence, which was declared a sub-jail after a court had earlier cancelled protective bail granted to him on April 18 over the judges detention case.