David Warner 'must have a screw loose', says Michael Vaughan

Former England cricket captain Michael Vaughan says David Warner must have a "screw loose" after the Australian batsman was alleged to have attacked England player Joe Root in a Birmingham bar.

Cricket Australia say Warner, 26, was "allegedly involved in a physical altercation with an England player" on Saturday after his side's loss to England at Edgbaston.

Vaughan does not think Warner should be dropped from the tour but says he needs a "slapped wrist" and a warning about his behaviour.

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