The AFL is looking into an incident in which West Coast youngster Harvey Johnstone was grabbed by a Collingwood fan from behind the fence at Marvel Stadium.

Johnstone contested with Josh Daicos for a mark near the boundary line before the ball spilled in front of them and went out of bounds early in the last quarter of their clash on Sunday.

WATCH THE VIDEO ABOVE: Collingwood fan grabs West Coast youngster Harvey Johnstone.

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The Eagles draftee followed the ball out of bounds and grabbed it before it hit the fence.

When he got to the fence, he was grabbed by the Collingwood fan, who had two hands on his head.

The fan then grabbed the ball out of Johnstone’s hands and handballed it back to the boundary umpire.

His contact with Johnstone was not aggressive or harmful, and the player took it in good spirits.

Johnstone had a smile on his face and made no issue of it.

Harvey Johnstone was grabbed by a Collingwood fan. Credit: Fox Sports

But there is a comparable precedent here, which didn’t go down quite as smoothly.

Last year a member of the crowd at Richmond’s Round 21 clash with the Western Bulldogs was banned from attending all AFL and AFLW matches for over a year for tapping Tigers winger Marlion Pickett on the shoulder and appearing to say something to him.

Pickett immediately reacted in what looked like anger, knocking the fan’s drink out of his hand in retaliation.

Marlion Pickett was touched by a member of the crowd in a match last year. Credit: Channel 7

Speaking on that incident at the time, Channel 7 commentator Abbey Holmes said it was totally unacceptable.

“You don’t like to see that. Crowd in attendance can never touch players in that way,” she said last year.

“You don’t see that very often in AFL. That is absolutely not on. Security was straight there on the scene.

“Hopefully Marlion is okay.”

West Coast have been contacted for comment regarding Johnstone’s incident.