The official cause of a spectacular fire at the Port of Tauranga on Friday remains unknown, for now.
But the man investigating the fire says he thinks he knows what might have happened.
Bay of Plenty specialist fire investigator Luke Burgess was trawling through the scene of the fire near the entrance to the port yesterday , working to establish how the fire started.
Read more: Fire destroys workshop at Port of Tauranga
Port of Tauranga chief executive believes fire was caused by electrical fault
"I've got a fairly good idea at the moment so I'm just trying to prove it ... trying to pinpoint the exact cause," he said.