SIGNIFICANT failures have been highlighted in Police Scotland's response to reports a 91-year-old man was driving to a relative's home to kill him.

The elderly motorist was stopped by armed officers on the A9 on November 14 last year after the force received a 999 call from his alleged intended victim.

The man was held for almost six hours at Invrness police station on suspicion of making threats, but was released without charge.

In a report, the Police Investigations & Review Commissioner John McNeill said officers failed to complete their enquiries or obtain any additional information or evidence.