A Liverpool fan is being investigated by Merseyside Police for an alleged racist gesture which was captured on TV footage during the FA Cup fourth-round tie with Manchester United at Anfield.

It was the first game between the rivals since the eight-match ban imposed on Liverpool striker Luis Suarez after the FA found him guilty of racially abusing United captain Patrice Evra.

Following Liverpool's 2-1 win, it emerged that police were investigating the alleged racist gesture.

The image was distributed on social networking websites and a number of complaints were made to police.