Irish international Niall O'Brien has been suspended by Northamptonshire and been stripped of the vice-captaincy, a position he only took over last month after a disciplinary breach.
"He's been suspended from his vice-captaincy for an internal disciplinary matter which is ongoing," Northamptonshire chief executive Mark Tagg told the BBC.
"There's a meeting to take place, and it will be sorted out this week," he added.
He was not selected for his side's Friends Provident t20 loss to Derbyshire and the thrilling tie against Nottinghamshire at Trent Bridge, and his enforced unavailability comes at a time when Northamptonshire are already missing David Sales, Stephen Peters, Mal Loye, David Lucas, David Wigley.
O'Brien, who was appointed as Andrew Hall's vice-captain following the resignation of Nicky Boje as club captain, has himslef been struggling with a finger injury for most of the season and will undergo an operation before the 2011 World Cup.
Northamptonshire currently sit in seventh place in the North Division of the T20 competition and they next play Worcestershire on 25th June.
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