Wembley Stadium will take “appropriate action” against Millwall’s pitch invaders.
Hundreds of Lions supporters ran on to the pitch at full-time to celebrate their club’s return to the Championship.
But there were some distasteful scenes as fans were seen goading Bradford players.
A Wembley Stadium spokesman said: “We do not condone the scenes at the final whistle of Saturday’s League One play-off final, which saw some fans enter the pitch.
“The matter was dealt with by Wembley Stadium’s security response team and no injuries were reported.
“It is an offence to enter the pitch and we will be working with the relevant authorities and Millwall Football Club in an attempt to identify those individuals involved and we will take appropriate action if required.
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“We will also undergo a thorough debrief with our security team to help avoid repeat incidents for upcoming events.”
On Saturday, Wembley’s pitch was invaded for the first time since opening in 2007.
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