Referring to Perez's form, Marko alluded to his "South American" heritage when comparing him to Max Verstappen and Sebastian Vettel, suggesting that he wasn't as focused as the team's two world champions.
"He is South American and he is just not as completely focused in his head as Max is or as Sebastian," Marko said.
The comments caused a stir on social media, especially in Perez's native Mexico, which is in North America.
Marko had already issued a public apology for the words he spoke on Red Bull's own ServusTV channel after the Italian GP, but Perez said ahead of the Singapore GP that they had also met in private.
"I had a private conversation with him," Perez said. "He did apologise. And that to me was the main thing.
"And yeah, basically, we move on. I have a personal relationship with him. And I think you can always have those feelings when you see that sort of stuff.
"Knowing the person helps a lot, because I know he doesn't mean it that way. And I took his apology, because I know Helmut from the personal relationship that we have that he doesn't mean it that way."
Source: Autosport