The Delhi HC asked the city-government whether it was going to regularise the encroachment on forest-lands in the national-capital. The court, hearing the PIL initiated by it in 2015 on the issue of poor air-quality in Delhi, was informed about the apprehension of the amicus curiae that while regularising over 1,700-unauthorised-colonies, the government could also regularise encroachment on forest lands, which cannot be done.