The address is known and it has also been published in Times Of India earlier. Question is how can the State of Pakistan reach him legally and detain him. The extant and reach of terror is very widespread. They will simply eliminate the officers and the families in Pakistan who will seek to arrest.
The matter is not as simple in a civil democracy as it appears. I remember in 1970's a custom officer was stabbed in broad daylight on his chair just because he was sincerely duty bound.
It took many years of political work to create the secured and secular ambience where lawful work could be done safely.