Tuesday night's Amtrak derailment occurred on a section of track where several freight trains have derailed in recent years.

Tuesday's wreck killed a 68-year-old Chicago woman and injured more than 60 others. The crash occurred in a swampy area near Flora, Mississippi. On the same section of track, a train carrying hazardous chemicals derailed in 1997. That crash forced the evacuation of about four-thousand Flora-area residents.

Three other freight trains have derailed on those tracks within a five-mile stretch in the last 20 years. In 1986, about one-thousand-500 residents were evacuated after a chemical-laden freight train crashed. A tanker car containing propane burst into flames. In February 1994, two 100-car freight trains collided, killing one of the engineers. And in April 1994, 30 residents were evacuated after a 12-car derailment.

The rail lines are owned by Canadian National.