Scottish police's football tactics under scrutiny

Fans heading to football matches this weekend are bound to come across the police who are there to make sure they stay safe.

But a new review is looking at how matches in Scotland are dealt with.

In part, it's examining how police have recruited informers among the fans at games between Celtic and Rangers - an age-old sporting rivalry which goes far beyond the pitch.

Sky's sports correspondent Martha Kelner reports.

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