A disgruntled customer is not being ruled out as the culprit behind a suspicious blaze at a Work and Income office in Auckland this morning.
Police said a man was helping with their inquiries after the fire damaged the entrance to the two-storey Winz building on Mountwell Cres in Panmure.
Detective Senior Sergeant Paul Newman said firefighters had found the entrance well ablaze shortly before 4am today.
"Fire investigators at the scene determined that the fire was suspicious and could have been set up to an hour and a half before the alarm was raised,'' he said.
"A scene examination has located an amount of debris in the entrance, which seems to indicate that the fire was deliberately lit.''