FIFA president Sepp Blatter said AC Milan midfielder Kevin-Prince Boateng's decision to walk-off the pitch after having racist chants directed at him was not the right one.
The former Portsmouth and Tottenham player led his teammates off the pitch during a friendly match with Pro Patria and insisted he would walk-off again in a competitive game under similar circumstances.
Quoted in United Arab Emirates newspaper The National, Blatter said: "Walk off? No. I don't think that is the solution. But the Italian federation has yet to provide FIFA with a report detailing what exactly has happened.
"I don't think you can run away, because then the team should have to forfeit the match. This issue is a very touchy subject, but I repeat there is zero tolerance of racism in the stadium, we have to go against that.
"The only solution is to be very harsh with the sanctions (against racism) - and the sanctions must be a deduction of points or something similar."
More top news
The 10K and half-marathon races take place almost exactly a year after Salman Abedi killed 22 in his attack at an Ariana Grande concert.
Dmitrios Pagourtzis also had several kinds of homemade explosive devices but they were not capable of detonating, county officials said.
After early mist clears, most parts of England and Wales will have another fine, warm day with plenty of sunshine.