Charlie Sheen is being investigated by LA Police Department for an alleged knife attack in a dental surgery while the actor was high on cocaine.
According to law enforcement officials, the Two and Half Men star visited a dentist in LA when he reacted badly when a dental nurse placed a mask on him to give him nitrous oxide before a dental procedure, TMZ.com reported.
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The nurse also allegedly told police that Sheen's bodyguard told the dentist that he was 'high on rock cocaine'.
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Sheen apparently struck the nurse and threatened the dentist with a knife.
Sheen's representative later revealed that no one was injured and there was no knife involved in the incident.