“No one was injured.”
It appeared that the fire began in the former fish and chip shop, but the cause was not yet known, he said.
Resident Beryl Johnson, who lives nearby, said Whanganui East was typically a quiet neighbourhood.
“I saw thick black smoke at first ... then I heard glass breaking. I came around here and it was well ablaze.”
She said the fish and chip shop had been closed for a few years.
“They used to make nice chips.”
The fire is being treated as suspicious and a specialist fire investigator will work with the police to determine a cause.
Police said they were alerted to the house fire and were at the scene.
Eva de Jong is a reporter for the Whanganui Chronicle covering health stories and general news. She began as a reporter in 2023.