Texas Explosion: What Was The Cause Of The Waco Fertilizer Plant Explosion That Killed 15, Left 160 Injured In West Texas? [VIDEO]

An explosion at a Texas fertilizer plant in a small north of Waco has left 160 injured and as many as 5 to 15 are feared dead. The fire and chemical explosion occurred at the West Fertilizer Plant in West, Texas, at around 8 p.m. Wednesday. However due to the large scale blast officials were still attempting to calculating the death toll and aiding to injured victims, while still attempting to locate survivors amidst the destruction.

Sgt. William Patrick Swanton of the Waco Police Department told reporters in regards to the figure of five to 15 deaths, "I know that's a rough estimate, but that's the best that I can give you."

The West EMS Director Dr. George Smith, believed the blast killed at least 2 emergency first responders, when they were called about the fire at the fertilizer plant, which then ignited the explosion. More first responders to the fire were believed unaccounted for after the blast, according to Smith, Swanton and West Mayor Tommy Muska.

Because of the unknown origin of the fire that ignited the explosion, investigators are treating the explosion site as a crime scene. "We are not indicating that it is a crime, but we don't know," Swanton said. "What that means to us is that until we know that it is an industrial accident, we will work it as a crime scene. ATF is conducting the main investigation."

Officials stated that the building in a five block radius around the plant suffered serious damage by the massive blast; this radius includes at least 60 homes. The blast was so massive that the explosion registered as a 2.1 magnitude seismic event, according to the U.S. Geological Survey.

The enormous explosion was felt 20 to 30 miles away, "With the explosions, the whole street lifted up," West City Councilwoman Cheryl Marak told ABC News. "It was like a massive bomb went off. It demolished both my houses, my mother's and mine."

There are more than 100 wounded being treated at the Hillcrest Baptist Medical Center in Waco, Texas. At least 16 of the victims are said to be in critical condition. Patients from the blast also were confirmed early Thursday at Providence Healthcare Network in Waco, Parkland Hospital in Dallas, and Scott & White Memorial in Temple, Texas.

The scene following the explosion was pure chaos, first responders frantically pleaded for help and gave insight to the disorder of the explosion, "We need every ambulance we can get this way," one snippet said. "A bomb just went off. It's pretty bad." Another responder stated, "Firefighters down, there has been an explosion." And lastly they confirmed, "The rest home has been seriously damaged. We have many people down. Please respond."