Credit Suisse Chairperson Antonio Horta-Osorio is likely to be reprimanded by the bank's board after an internal investigation found he breached COVID-19 rules a second time, Tages-Anzeiger newspaper reported on Saturday.

The probe by Credit Suisse's legal team found the Portuguese banker attended the Wimbledon tennis finals in London last July without following Britain's quarantine rules, two sources told Reuters last month. This followed a breach of Swiss COVID-19 rules in November.

Horta-Osorio will not be removed, but will likely be rebuked in the coming weeks, Tages-Anzeiger said, citing informed sources.

Credit Suisse declined to comment on the newspaper story when contacted by Reuters.

Horta-Osorio faces growing pressure within Switzerland over the incidents, while staff in London and New York are also upset about his conduct, the paper added.