The courtroom located in Karachi, Pakistan held a trial of a terrorist suspect. During the trial proceedings evidence was being given by Sindh Police Department's Abid Ansari, investigating officer of Kalkot station. He was exhibiting the weapons recovered from the accused terrorist, including a hand grenade in a box, reported by Daily Pakistan.
The investigating officer brought forth the hand grenade and the judge enquired of how the grenade worked. The court clerk walked towards the box and plucked the pin from the grenade to demonstrate the mechanism of a grenade. A few seconds after the pin was pulled a loud blast could be heard throughout the courtroom.
The clerk and two policemen were injured due to the blast, the injuries weren't fatal and only minor, the three were treated at a local hospital. The grenade was home-made and hadn't been defused prior to being displayed in the courtroom. The grenade only held a tiny amount of explosives in it's detonator, which caused the majority of the damage.
The trial has currently been suspended.