Police are investigating racist comments made against Chelsea defender Ashley Cole on Twitter, just days after his team-mate John Terry was cleared of racism.
Chelsea captain Terry was cleared of a racially aggravated public order offence at Westminster Magistrates' Court last Friday, after it had been alleged that he had used a racist obscenity about Queens Park Rangers defender Anton Ferdinand.
After the case, a user, believed to be a man from the Derbyshire area, referred to Cole as a "choc ice" on the social networking website.
Anton's brother, Manchester United defender Rio Ferdinand, then replied: "I hear you fella! Choc ice is classic hahahahahaha!!".
He later wrote: "And if I want to laugh at something someone tweets....I will! Hahahahaha! Now stop getting ya knickers in a twist!"
On Sunday morning, Rio again tweeted, insisting: "What I said yesterday is not a racist term. Its a type of slang/term used by many for someone who is being fake. So there."
Derbyshire Police on Tuesday said it was now investigating the original tweet after receiving complaints from members of the public.
During the trial, Cole had said that team-mate Terry was not racist.
A spokeswoman for Derbyshire Constabulary said: "We have received complaints from members of the public regarding alleged racist comments made on a social networking site.
"These concerns will be fully investigated to establish whether any criminal offences have been committed.".
The events of the past few days had led to Cole at the weekend putting out a statement through his lawyers to stress that he did not want to take the matter any further.
The statement said: "Ashley Cole has been made aware of the discussion following comments appearing on Twitter and wishes to make it clear that he and Rio Ferdinand are good friends and Ashley has no intention of making any sort of complaint.
"Ashley appreciates that Tweeting is so quick it often results in off-hand and stray comments."