The Queen Street Mall gunman is wanted for questioning over the fatal stabbing of a 41-year-old man in Moreton Bay on Thursday morning.

Homicide detectives investigating the suspected murder are seeking 39-year-old Lee Matthew Hillier, who was released from prison last year after pulling a gun on police in Brisbane’s central shopping strip in March 2013.

Lee Matthew Hillier, pictured being confronted by an armed police officer, locked down the Queen Street Mall in March 2013. Credit:Andreas Kouremenos

Detectives from Pine Rivers Criminal Investigation Branch launched a public appeal on Friday morning, asking anyone who saw Hillier to not approach him but contact police immediately.

Detective Inspector Damien Hansen said officers running Operation Quebec Amadeus investigating the stabbing murder were “very confident” of locating Hillier.