
British authorities have arrested former world champion sprinter Chijindu Ujah as part of an investigation into an alleged cryptocurrency fraud network accused of targeting investors through fake security alerts and impersonation tactics.
Police said the group allegedly posed as law enforcement officers and representatives of crypto firms to convince victims to hand over wallet security credentials, including seed phrases used to access digital assets. Once victims shared the information, funds were reportedly drained from their wallets. One victim is believed to have lost more than £300,000.
Ujah, who won gold in the 4x100m relay at the 2017 World Championships and later lost his Tokyo Olympic silver medal following anti-doping violations, was released on bail alongside several other suspects. Another British sprinter, Brandon Mingeli, remains in custody pending further proceedings.
The case adds to growing concerns over social engineering scams targeting crypto investors across Europe and Asia. Unlike exchange hacks, many recent fraud cases rely on direct manipulation of victims through fake customer support calls, impersonation messages, phishing websites, or fraudulent wallet recovery procedures.
Cybersecurity investigators say seed phrase theft remains one of the most damaging forms of crypto fraud because transactions on blockchain networks are irreversible once assets are transferred. Fraud groups frequently impersonate regulated exchanges, wallet providers, or even police agencies to create urgency and gain victims’ trust.
The investigation also highlights how online fraud networks are increasingly overlapping with celebrity culture, social media influence, and public figures. Financial watchdogs in multiple jurisdictions have recently warned that scammers are using familiar names, verified accounts, and investment communities to make fraudulent schemes appear legitimate.
The UK case follows a broader rise in crypto-related fraud investigations tied to fake investment platforms, romance scams, and impersonation operations. Regulators globally continue to warn investors never to share seed phrases or private wallet credentials, regardless of who claims to be requesting them.