Racial abuse suffered by winger Junior Stanislas after he had scored the winner in a 1-0 victory at Stoke has been condemned as "disgusting and completely intolerable" by his club Bournemouth.
The English Championship club want the "strongest possible action" to be taken against the person responsible for the racism on Twitter.
Bournemouth also want to see the social media company take greater responsibility for eradicating hate messages, chief executive Neil Blake said.
"It is both disgusting and completely intolerable that anyone could be subjected to the racial abuse that Junior has received," Blake said.
"I am astounded that people believe writing and posting these comments is acceptable.
"We will be contacting Twitter and the Football Association for their help in identifying the individual concerned, and will pursue the strongest possible action against them."
Blake wants formal identification requirements to use social media accounts.
"We strongly believe that social media platforms need to take greater responsibility and accountability for the actions of their users and the content that is published on their platforms," Blake said.