Story highlights Indian Home Minister advises states to halt operations of Web-based taxi services

New Delhi announced a ban on Uber, but the car service says it's still operating

The moves follow the alleged rape of a woman by an Uber driver who is now in custody

New Delhi (CNN) India's federal government on Tuesday warned states against allowing unlicensed Web-based taxi services after an Uber driver was accused of raping a woman in New Delhi.

Home Minister Rajnath Singh said his ministry had advised state governments "to ensure that the operations of the web-based taxi services are stopped" and that non-licensed operators are prohibited until they register with authorities.

Transport authorities in New Delhi on Monday announced a ban on Uber services in the Indian capital , saying their investigation revealed the company was violating permit rules.

Authorities say Uber was operating as a local taxi on a national permit. Commercial vehicles on national permit cannot operate as taxis ferrying passengers from one destination to another within a city.

New Delhi police say they will implement the ban. But Uber said it hadn't been officially notified of the measure and that its service was still operating in the city.