The Metropolitan Police told Sky News "two men were detained and ejected" from The Den.

A police spokesman added: "They will each be summonsed for an offence under the Public Order Act.

"Enquiries are ongoing to locate a third man in connection with the incident."

The supporters were reportedly mocking the death of former Leicester owner Vichai Srivaddhanaprabha, who died in a helicopter crash in 2018.

Video recorded by fans at the stadium and published on social media showed a group of men making hand gestures while pictures published later appeared to show them being escorted away from the stands by security staff.

Leicester Police Events, a police account supporting Leicester City's football safety and security, earlier reported its officers were "aware of the footage circulating".

The account added: "Thanks to all who got in touch."

Srivaddhanaprabha, a Thai billionaire, and four other people died when their helicopter spun out of control and crashed in October 2018.

The other four people killed were the helicopter's pilot Eric Swaffer, Mr Swaffer's partner Izabela Lechowicz, ex-Thai beauty queen Nursara Suknamai and Kaveporn Punpare, who worked for the Leicester City owner.

Leicester and Millwall are yet to comment publicly on the footage.