My personal car was stopped by octroi officers near a state border in India. They searched my car, and then said that I should have paid octroi tax on the personal computer I was carrying in the car.
I told them that all taxes were paid including VAT and Octroi for the computer when I bought it 5 years ago.
The said it doesn't matter, I must stop at the Octroi office and pay taxes again every time I am crossing a state border for everything I am carrying in my vehicle.
He said my only option is to pay them bribe, or they will impound my vehicle indefinitely.