Liverpool and Manchester United have been fined 40,000 euros (£30,565) each - half of which has been suspended - for illicit chanting by their fans during March's two-legged Europa League clash.
The Reds were fined a further 17,000 euros (£12,995) for the offences of setting off of fireworks, throwing of objects, crowd disturbances and a late kick-off and ordered to contact United within 30 days for the settlement of the damages caused by their supporters at Old Trafford.
United were fined 18,000 euros (£13,751) for the offences of blocking stairways, crowd disturbances and the throwing of objects.
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UEFA's control, ethics and disciplinary body announced 50 per cent of both clubs' fines for illicit chanting were suspended for a probationary period of two years.
Liverpool still have disciplinary charges outstanding in relation to setting off fireworks in their quarter-final against Borussia Dortmund and more fireworks offences and crowd disturbances relating to last week's Europa League final against Sevilla.