The instructions were issued by the LG in a meeting today with top police officers including Commissioner Alok Kumar Verma, Special Commissioners (Law & Order), Joint Commissioners (all ranges) and DCPs (all districts).
"In today's meeting, the Lt Governor issued strict instructions to impound all diesel vehicles which are over 15 years in the national capital," an officer in the LG office said.
There are around 1.91 lakh diesel vehicles older than 15 years registered with the transport department in the city.
Jung had ordered de-registration of diesel vehicles older than 15 years on November 7 to tackle the air pollution crisis in Delhi.
Last week, the transport department of Delhi government had written to Delhi Police, asking the force to impound these vehicles. The department had also asked police to ensure that these polluting vehicles are not parked in public places.
In another step to tackle air pollution, Jung issued an appeal to households which employ guards and watchman to provide heaters for them, so that they do not resort to burning dry leaves to keep warm in the coming winter months.