A bench headed by Chief Justice S H Kapadia on Tuesday asked them to file their reply within a week.

It also directed all the states, which have not implemented the scheme, to complete the process of providing high security number plates and licences for vehicles within eight weeks.

The court passed the order on a petition filed by Chairman of All-India Anti-Terrorist Front M S Bitta seeking the court’s direction to introduce tamper-proof number plates and licences for vehicles, contending that the present system is prone to misuse by anti-social elements.

He had contended that despite repeated orders from the apex court, the state governments have failed to introduce the scheme.