LynnMall supermarket stabbing: Investigation launched into lead-up to terrorist attack

Three agencies have launched a coordinated review of the events preceding the LynnMall stabbings.

The way Ahamed Samsudeen was managed in custody - and in the seven weeks leading up to the attack - will be examined by the Independent Police Conduct Authority, Office of the Inspectorate at the Department of Corrections, and Inspector-General of Intelligence and Security.

The review will investigate if police, Corrections and the NZSIS did enough to assess the risk that Samsudeen posed - and if they did enough to respond to that risk.

A separate review is already underway into his shooting.

The coordinated review is due for completion next March.