Merseyside Police will conduct enquiries after two of their officers suffered injuries during the attack on Manchester City's bus ahead of the Champions League game with Liverpool at Anfield.
Projectiles including bottles and fireworks were launched at the visiting team's vehicle as they made their way to the stadium ahead of the quarter-final first leg.
Liverpool issued a public apology for the damage caused, condemning the actions of a few supporters "in the strongest possible terms" while offering their opponents support.
The club will also cooperate with authorities to help identify the individuals who were involved in the incident prior to their side's 3-0 win.