Twelve held over Dundee United-Aberdeen game 'disorder'
Twelve people have been arrested in Aberdeen and Dundee in connection with football-related violence.
Police mounted an operation in response to incidents in Dundee on 13 December, when Aberdeen beat Dundee United 2-0 at Tannadice in a SPFL Premiership clash.
Police Scotland said 50 officers were involved in the early-morning raids in the two cities.
Ch Insp Murray Main said the campaign against anti-social behaviour would continue over the coming weeks.
Eight people were detained in Aberdeen, and four in Dundee.