Singh had come to take part in the public information campaign of the Centre's Bharat Nirman programme, when his vehicle with red beacon light, was spotted with the national flag that was mounted in a wrong way, they said.
When the mediapersons drew his attention towards it, Singh said the vehicle was provided to him by the district administration officials as part of protocol.
Singh said that he did not notice the mistake and added that it must have happened accidentally.
After the matter was brought to light, Singh immediately directed the officials concerned to rectify the mistake.