'Significant Devastation' in West, Texas, Explosion

Waco Police Sgt. William Patrick Swanton talks to "GMA" about rescue efforts and aftermath.
3:00 | 04/18/13

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Transcript for 'Significant Devastation' in West, Texas, Explosion
For more we're joined by sergeant patrick swanton. Know all of us are praying with you, the devastation is so hard to absorb. Can you give us a sense of what you're dealing with right now? Yeah, at this point the operation moved into a search and rescue mode. We know that the blast was devastating on this town last night. We have recovered people we know there are casualties. At this point we're going door to door, house to house, business to business trying to find survivors, trying to make sure that those that are still there maybe trapped in rubble, need medical help, we're getting them. We know that the fire occurred approximately 15, 20 minutes later, the major blast occurred. There is some significant devastation into the town of west, texas. Leveled in so many ways. I know you're talking about searching for the souls missing right now. The current estimate, 5 to 15 dead? That's what the last numbers I have were 5 to 15 casualties, fatalities, if you will. We know that we've had at least 160 individuals that have been injured. Some of those are very significant wounds, broken bones, open wounds. And is there any way to know how many people are actually missing right now? It's still unclear. We know that there are firefighters that were there actually working the fire at fertilizer plant. Those firefighters have not been accounted for at this point. Again, they are part of the search and rescue. We're searching assuming we're going to find them and maybe they are injured and can't get out. But we'll continue that until we find them. Sergeant, I know you're treating this entire area as a crime scene but do you have any evidence that this fire was intentionally set? We do not. At this point obviously the atf is here, the state fire marshals are here. They are treating it as a crime scene. The reason we're going to do that, it brings a little bit better investigative experience in and they're notoing to leave a stone unturned. Sir, what is the greatest danger right now? I know there had been some concern about ammonia fumes. Our emergency personnel here, our environmental folks here have indicated that there is not a threat to the community based on toxic fumes, smoke fumes getting into the community. Your top priority right now? Is absolutely to save lives that we can. To make sure that we've got all the injured people. Good luck with all that, sir. We're thinking of you this morning. Thank you for joining us.

This transcript has been automatically generated and may not be 100% accurate.

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