A West Coast Fever spokesman said they had no further comment about the incident and were satisfied with the cooperation and actions taken by Dunedin police.
"We'd like to take this opportunity to thank Dunedin Police and Australian Federal Police for their assistance in this matter."
The threat prompted extra security for Plummer when she travelled with her team to Dunedin for the ANZ Championship game against the Southern Steel on March 22.
"The safety of the team and its support staff is Netball Western Australia's highest priority," the franchise said in a statement following the game.
The Steel won the match 66-65.