WA Police Union president Harry Arnott has been stood aside from his position after a police investigation was launched into him.
In a statement, the union said its board of directors "was recently made aware of an active WA Police Force managerial investigation" into Mr Arnott.
At a meeting held yesterday without Mr Arnott, the board unanimously voted to direct him to take leave, effective immediately.
"The Board did not take this decision lightly and believes it was necessary, appropriate and in the best interests of the Union," the statement said.
It said no further details would be provided "as this investigation is ongoing."
Mr Arnott has been president since November 2018, replacing George Tilbury, and has been on the board of the union since 2011.
Senior vice-president Mick Kelly will temporarily act in the role.
