ST. PAUL, Minn. (AP) — Safari Club International is suspending the membership of the Minnesota hunter accused of illegally killing a protected lion in Zimbabwe and wants a “full and thorough investigation” into the lion’s death.

The club, which promotes big-game hunting worldwide, issued a statement late Wednesday saying memberships for Walter Palmer and his guide in Zimbabwe, Theo Bronkhorst, will be on hiatus until investigations are complete.

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Bronkhorst is facing criminal charges in Zimbabwe over the July 1 killing of the beloved lion named Cecil, who was drawn away from a wildlife preserve and shot by Palmer with a bow and arrow. Palmer has said he believed the hunt was legal.

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The Safari Club says “those who intentionally take wildlife illegally should be prosecuted and punished to the maximum extent allowed by law.”

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