Sitting about 75 miles south of Dallas and 120 miles north of Austin, West is one of 22 incorporated communities in McLennan County.

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The area around the site of remains "very volatile" because of the presence of ammonium nitrate, according to Matt Cawthon, chief deputy sheriff of McLennan County.

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"The citizens of McLennan County and Texas must have confidence that this incident has been looked at from every angle and professionally handled -- they deserve nothing less, " McLennan Sheriff Parnell McNamara said.

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