Two speeding vehicles were clocked overtaking a police officer at 100mph on Norfolk's roads in the same night.

https://twitter.com/PCSteveLee/status/837750955131224065

Roads policing officer @PCSteveLee tweeted an image of a vehicle overtaking him on the A47.

'Not a great idea to overtake an unmarked car at 100mph on the #A47, especially with less than a year's driving experience #fatal4 #reported,' he said.

Then a short while later another speeding vehicle overtook him on the A11.

He tweeted: 'Dealt with the #A47 stop and then another vehicle overtook me at over 100mph on the #A11, driver reported #slowDown #fatal4.'

https://twitter.com/PCSteveLee/status/837751250607357952