England players were subjected to racist abuse from Montenegro fans in their Euro 2020 qualifier in Podgorica.
Manager Gareth Southgate insisted he "definitely heard abuse" at Danny Rose late in the game, whilst Raheem Sterling appeared to respond by cupping his ears to home fans after scoring the fifth goal.
The FA are now set to speak to their players and compile evidence before reporting the incidents to Uefa.
Southgate said: "I definitely heard abuse at Danny Rose when he got booked at the end of the game.
"There's no doubt in my mind that happened.
"We'll make sure it's reported officially. That's not acceptable."
Asked whether Sterling's celebration was a response to racial abuse, he admitted he was yet to seek clarification from the player.
Montenegro 1-5 England: Ross Barkley hits brace - 5 talking points
"I'm not sure yet," he added, "I had quick chat with Danny as I heard what had happened there.
"I've not had chance to speak to Raheem yet.
"Whatever he has heard we'll report, but I don't want to speculate yet.
"I know what I heard. We'll definitely deal with it in the right way and support our players."
It was a despicable end to a night that saw the Three Lions win back-to-back games by five goals or more for the first time since 1984 as Southgate's decision to turn to young talent paid off.
"I know what I heard. We'll definitely deal with it in the right way and support our players."
It was a despicable end to a night that saw the Three Lions win back-to-back games by five goals or more for the first time since 1984 as Southgate's decision to turn to young talent paid off.
England fans love what Raheem Sterling did after scoring against Montenegro
Declan Rice looked comfortable enough on his first start and Callum Hudson-Odoi recovered from a nervy opening in impressive fashion on the night he became the second-youngest player to start a competitive match for his country.
The 18-year-old and then Michael Keane were culpable of failing to clear the ball as Vesovic opened the scoring, but both recovered impressively.
The latter rose to head home his first England goal from a free-kick sent in by Ross Barkley, who turned home after a shot from Hudson-Odoi.
Barkley slammed home a second and Kane turned in a cross on the break from Sterling, who gestured with his ears towards the home fans after latching onto an exquisite Jordan Henderson through ball.
Hudson-Odoi picked up an object thrown onto the field during the aftermath of that goal, while things boiled over late on and Rose was subjected to monkey chants.
This was not the first time racial abuse has occurred at a big game in Montenegro.
Rangers players DaMarcus Beasley and Jeane-Claude Darcheville were subjected to racist abuse by FK Zeta fans in a Champions League qualifier in the country back in 2007, resulting in a £9,000 fine from Uefa.
