LONDON (AP) — Police are considering filing manslaughter charges related to the fire at a west London apartment tower that killed at least 79 people.

In its most detailed briefing on the criminal investigation, the Metropolitan Police today confirmed residents’ suspicions that the June 14 inferno at Grenfell Tower was touched off by a refrigerator fire. The department also said exterior cladding attached to the 24-story public housing project during a recent renovation failed safety tests conducted by investigators, and that police have seized documents from a number of organizations.

“We are looking at every criminal offense from manslaughter onwards,” Detective Superintendent Fiona McCormack told reporters.

The government has ordered an immediate examination of the refrigerator model that started the blaze. McCormack said the Hotpoint model FF175BP refrigerator-freezer had not been subject to any product recalls before the fire.