Thirteen interviews have been carried out under caution by British detectives investigating the Grenfell Tower fire, police said.
The questioning forms part of the criminal investigation into the tower block blaze in west London and Scotland Yard said more interviews are scheduled.
The Metropolitan Police said they would not be disclosing how many individuals the 13 interviews concern.
The news comes a week before the two-year anniversary of the fire, which claimed 72 lives.
In March, police said no charges were likely to be brought for at least the next two years.
The Met said it would be “wrong” not to wait for the final report of the Grenfell Tower Inquiry, which will come after the probe’s second phase.
This is not due to start until early next year.