Killing your own co-worker based on the torn poster inside the workplace? Very rare, people feel office/workplace is second home. You spend half of your life there. It will never happen in India at least in organized sectors like office/factory etc.
Pakistan is investigating everything incident that happened in the course of tragedy:
200 raids conducted in less than 24 hours.
118 arrests including 13 main culprits,
12Hrs recording of 160 cameras (12x160=1920Hrs of recording).
Mobile data analysis of thousands of mobile calls.
Video footages and mobile data analysis still going on process.
Forensic analysis in progress.
Our government knows how to deal with it. Yes I know never a wrong happens in India so don't be defensive. You are not a party to that tragedy. Stay calm and stay safe.