A video posted online appeared to show the player sitting in traffic as a number of people, including children, gathered near his car before he drove off.
A Liverpool spokesman said: “The club, after discussion with the player, have made Merseyside Police aware of the footage and the circumstances surrounding its capture.
“We have spoken to the player also and will deal with any follow-up internally.
“Neither the club or player will be making any further comment on this matter.”
Merseyside Police said: “We have been made aware of a video believed to show a footballer using a mobile phone whilst driving.
“This has been passed to the relevant department. Thanks for letting us know.”
The Egypt international scored 11 goals to help Jurgen Klopp’s side reach the final in Kiev, where they lost 3-1 to Real Madrid.
The Belgium international joins Real Madrid pair Toni Kroos and Luka Modric as the trio of players up for that award.
New Liverpool goalkeeper Alisson Becker could also be named as the Champions League’s best goalkeeper for his performances at former club Roma, but the Brazilian will need to see off Madrid’s Keylor Navas and Gianluigi Buffon – who played for Juventus but is now at Paris St Germain.
The best defender award will definitely go to a Real Madrid player as Marcelo, Sergio Ramos and Raphael Varane are the three nominees.
The nominees were chosen by coaches and journalists, with the winners announced during the draw for this season’s group stage on August 30.
The Europa League does not have individual positional awards but will crown a player of the tournament from 2017-18 when the group stage for that competition is conducted a day later.
Manchester United’s late transfer target Diego Godin is one of three players shortlisted for the award – won in 2017 by Paul Pogba – with the Atletico Madrid defender in the running against team-mate Antoine Griezmann, scorer of two goals in the final win over Marseille – who have Dimitri Payet nominated.
Liverpool and Egypt superstar and goal-machine Mohamed Salah hits the training pitch to give Vuj from COPA90 a finishing masterclass, taking him on at different shooting challenges to prove his skill and accuracy.
But who won?
Check it out in our video below and get some great training tips from Maestro Mo at the same time.