Donald Day Jr, facing charges over guns and making threats overseas, is trying to block testimony from Queensland police

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An American man accused of messaging with an Australian family whose delusional beliefs contributed to them killing three people has objected to Queensland police testifying at his trial.

Donald Day Jr, 60, from Arizona, was arrested by FBI agents in December 2023 and charged with making threats to public figures and law enforcement agents and with illegal firearms possession in the United States.