Wieambilla shooting inquest testimony continues

A coroner is due to hear from a person close to the Train trio as testimony continues at the Brisbane Coroners Court.

Queensland's state Coroner Terry Ryan is investigating the Wieambilla shootings on December 12, 2022, which was preceded by New South Wales school principal Nathaniel Train, 47, illegally crossing into Queensland with a cache of firearms during a COVID border lockdown.

The person cannot be identified due to a court order handed down before the inquest hearings started.

Nathaniel Train and his brother Gareth, 46, fatally shot police constables Matthew Arnold, 26, and Rachel McCrow, 29, when they arrived at a remote property west of Brisbane with two other junior officers to serve an arrest warrant.

The brothers also fatally shot their neighbour Alan Dare before specialist police killed them and Gareth Train's wife Stacey, 45, that night.

A forensic psychiatrist has previously testified the Trains likely suffered from a "shared psychotic disorder" with Gareth as the primary sufferer who acted on extreme religious beliefs and conspiracy theories.