The striker, 29, was stopped while driving his £100,000 Merc without a seatbelt and with a pal and two girls inside.
Plain-clothes officers in an unmarked white car demanded to know where the group was heading — then sent Niasse packing with a warning.
The star’s slapdown came two days after the PM said all non-essential travel should stop.
A police officer is heard telling the men: “You are bang out of order, a disgrace. As a Premier League footballer you’ve just put everybody here at risk. What are you doing? It’s totally embarrassing.”
A witness in Withington, Manchester, said: “It is shocking that Niasse is carrying on regardless.
“We’re not supposed to gather with more than two people in public yet everyone in that car seems to think they can do what they want.
Everton star Niasse’s slapdown came two days after the PM said all non-essential travel should stop
“The officers were suspicious and clearly not happy at what they came across. They shone a torch into Niasse’s face. He was ordered to spell his name.
“There was even apparently a call put in to Everton to let them know what one of their players was up to. The girls left in an Uber. Niasse was given strong words of advice and sent on his way.”
Greater Manchester Police said: “At 9.30pm on Wednesday covert officers on routine patrol stopped a vehicle. The driver was reported for failing to wear a seatbelt and obstructing officers.”
Officers can issue £30 on-the-spot fines for breaching the lockdown without good reason.
Senegalese star Niasse was signed by the Blues for £13.5million from Lokomotiv Moscow in 2016.
He has scored eight times in 31 appearances. Everton were contacted for comment.
