Fires at the fertiliser plant and in some houses in West are still smouldering, but are not out of control, according to Sgt. William Patrick Swanton of Waco Police Department.
He added that the police are taking steps to secure the town of West following reports of "small amounts of looting".
A major rescue effort is ongoing in a Texas town devastated by a fertiliser plant explosion that has been likened to a nuclear bomb blast.
A huge explosion at a fertiliser plant in the Texan town of West has injured more than 160 people and caused widespread destruction.