The authorities in the North have designated the site of yesterday's fatal house fire in Omagh as a suspected crime scene.
Seven members of the same family - a couple and their five children - are believed to have perished in the blaze in Lammy Crescent.
Five bodies have been located and the other two are believed to be still in the debris.
Fire crews and police officers have been combing the wreckage to try to determine the cause of the blaze amid rumours it may have been deliberate.
This morning, they called a halt to the operation until a specialist fire investigator arrives from England.