The police watchdog, the IPCC, has upheld a complaint that a Cleveland Police officer punched a man.
The man in his forties was arrested at home in Hartlepool last year.
He also said police went through his mobile phone to stop him filming the incident.
The officer involved will face a misconduct meeting, and the force has been asked to look into whether the man was wrongly arrested.
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Emma Jesson brings you Sunday night's forecast
Wet and windy spells, interspersed with drier interludes this week. Breezy with wintry showers, variable temperatures and a weather warning
Mostly cloudy, some bright spells, rain on and off and blustery. Milder temperatures than on Saturday