An incident involving Cristiano Ronaldo and a fan's mobile phone on Saturday led to a police investigation.
The incident occurred after Manchester United's 1-0 Premier League loss to Everton.
In a video circulated on social media, the 37-year-old striker is seen limping off the pitch at Goodison Park before bending over and knocking a cell phone out of the hands of a fan.
A statement issued by Merseyside Police indicates that they are in contact with both clubs regarding "reports of an assault".
Cristiano has apologized through social networks.