“We’ve got 30 detectives working for me. They’re devastated that they missed this person by 12 hours,” he told reporters on Monday.
“I was in the investigation centre when we put a name to the face and it was a very happy room, only for us to do a check in 15 minutes and find out we’ve lost him.
“I was deflated, but that deflation quickly turns into determination and resilience to get the job done.”
Dalton said the man was “aware of police methodologies” and had been conducting “counter-surveillance activities”.