Another report said that a school located close to the fertiliser plant was evacuated two months ago owing to the plant fore, something which points to the ongoing problem at the place.
Public safety department trooper D L Wilson said half of the West was evacuated and more would be done by Wednesday night itself.
One tweet said carterbloodcare.org/ was asking for blood donations to help those injured in the blast and were suffering from blood loss. The authorities asked donors to visit the website and make appointment on Thursday.
One media report said there was no big concern for any sort of fumes engulfing the vicinity following the ammonium blasts.
The authorities reportedly started a second round of checking in the nearby areas to find any fresh victim when the last reports came in.