Suspicious package discovered attached to a rail car in Decatur this morning was discovered to be marijuana.

DECATUR, Alabama -- A suspicious package that was first thought to possibly be explosive this morning turned out to be 1 to 2 kilos of marijuana.

The response from emergency personnel was at the same time massive and precise, taking into consideration an estimated potential danger zone of a 25-mile radius.

"The focus and intensity by every member of the organization, from every agency, was constant," said Decatur Mayor Don Kyle.

The package was discovered this morning attached to a rail car at the Daikin American plant. The rail car was filled with hydrogen fluoride gas.

Decatur police, Decatur firefighters, the Huntsville bomb squad and the FBI all responded by dismissing students at several schools in four different counties and evacuating the area.

Decatur schools superintendent Ed Nichols said 20 busloads evacuated 1,300 students from 5 elementary and two high schools in 15 minutes.

Schools where students were dismissed included:

Blue Springs Elementary - dismissing immediately - will be transported to Cedar Hill Elementary

Calhoun Community

Clements High

Julian Harris Elementary School

Leon Sheffield Magnet Elementary

Benjamin Davis Elementary

Woodmeade Elementary

West Decatur Elementary

Tanner High School - dismissing immediately

West Decatur - dismissing immediately

West Morgan High, Middle and Elementary - dismissing at 10:30 a.m.

Highway 20 was shut down from Highway 67 to Lawrence County line, and the Coast Guard closed river traffic from Mallard Fox Industrial Park to the Highway 31 river bridge.

Authorities held a press conference at 11 a.m. at the Morgan County Emergency Management Agency to explain that a bomb squad would move in to inspect the package once all neighboring industries were evacuated.

The bomb squad went in around 12:25 p.m. and reported around 12:45 p.m. that the package had been removed and was not explosive.

Police confirmed shortly after in a 1 p.m. press conference that the box contained 1 to 2 kilos of marijuana, and that the rail car had originated in Mexico and crossed over at Brownsville, Texas.

"Everything worked as it was supposed to from notification onward," said Emergency Management Agency Director Eddie Hicks. "This is exactly what we plan for and practice for."