West Ham will launch an investigation into how two separate pitch invasions were allowed to happen in Wednesday's Carabao Cup defeat to Tottenham.
The Hammers will work with London Stadium landlords LLDC to discover how the two culprits evaded security, while the FA will also look into the incidents and could charge West Ham.
The Daily Mail reports that the first pitch invader ran on as Tottenham were preparing to take a corner in the 75th minute. After the man had been accosted by police, Spurs took the corner and Fernando Llorente scored their first goal.