The incident happened around 3.30pm when the cop and the lawyer identified as one Vijay got into an argument outside the lockup during which the cop posted with the third battalion of the Delhi Police allegedly opened fire from his service weapon.

from Times of India https://timesofindia.indiatimes.com/city/delhi/delhi-cop-opens-fire-at-lawyer-in-tis-hazari-court-police-vehicle-set-ablaze/articleshow/71866149.cms