Staffordshire Police have confirmed detectives "are investigating a number of alleged criminal offences in the form of offensive and racist comments made towards Stan Collymore via Twitter."
The former footballer turned pundit has spoken out against the abuse directed at him on the social network.
The mother of two young children taken from a hotel has spoken of her relief after they were found safe and well.
A father and grandmother to two young children have been arrested on suspicion of kidnap and attempted child abduction.
Police had appealed for information after two-year-old Na'llah Khan and her 10-month-old brother Sulailman Khan were taken from a hotel room in Stoke-on-Trent on Friday.
But the children were found safe and well in a guest house near Derby town centre at around 7pm today.
Their mother and wider family have been informed and the youngsters are being supported by specially trained officers before being re-united, police in Staffordshire said.
The children's father, Saleem Tahir, 40, and 67-year-old grandmother, Denise Smith-Sellars, both from Nottingham have been arrested on suspicion of kidnap and attempted child abduction.
The pair have been taken into custody where they will be interviewed by detectives.
Two young children snatched by their father are believed to be hiding out in Birmingham, police have told ITV Central.
Na'llah Khan, two, and her 10-month-old brother Sulailman were last seen with their father Saleem Tahir and grandmother Denise Smith-Sellers on Bristol Road in Selly Oak, Birmingham.
Chief Inspector Jane Hewitt, from Staffordshire Police, said officers believe they have not left the city.
She urged anyone else with any information on the family's whereabouts to call police on 0300 123 4455.
Police have issued a photo of the grandmother who they believe may have the two children who were snatched from a hotel in Stoke-on-Trent by their father.
Denise Smith-Sellers, 67, was seen with Saleem Tahir, 40, in Birmingham at about 8pm, on Friday, around three hours after he abducted two-year-old Na'llah Khan and her little brother, 10-month-old Sulailman Khan.
Anyone who knows the children's whereabouts has been urged to call 0300 123 4455
A 22-year-old man who died at V Festival in Staffordshire has been named as Timothy Brockhurst from Stoke Heath in Shropshire.
The cause of death is still unknown and a post-mortem examination will take place early next week. The death is not being treated as suspicious.