How does the video assistant referee (VAR) work?

Referees' chief Mike Riley explains how the video assistant referee (VAR) system works. It was first used in English club football in the Brighton-Crystal FA Cup third-round tie on 8 January.

READ MORE: VAR makes English club debut - but how does it work?

READ MORE: VAR to be used for FA Cup replays

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Section
BBC Sport
Subsection
Football