Two other people were left dead in southern Oklahoma, the report added, citing local officials.
'My office, the Texas Division of Emergency Management, and other state agencies are working with local officials to provide immediate support to the areas devastated by this tornado, ' said Governor Abbott.
In DeSoto Parish, one man reportedly drowned after accidentally falling into floodwaters.
"Water like I've not seen in many, many years, if ever", he said.
And a woman was killed on a bridge in Woodworth, Louisiana, 15 miles (24 kilometers) south of Alexandria, due to the severe weather, the Rapides Parish Sheriff's Office told KALB-TV. "I think we had about 20 or so homes that people were flooded in".
For Thursday, April 23, it's the southeastern United States that are in the bullseye of severe weather.
The university tweeted: 'All resident students safe. Damaging winds are also expected from New Orleans to the Florida Panhandle, and further north across the Carolinas.
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Tornado warnings sent residents taking cover in southern MS and Alabama.
More than 150,000 businesses and homes from Texas to Georgia were without power as the severe weather blew eastward, snapping utility lines as trees fell, according to poweroutage.us, which tracks utility reports.
Another tornado was confirmed in Jasper, Texas near the Louisiana border but there were no injuries or fatalities reported there.
As the tornado passes the path of the camera, heavy gusts of wind rip material off nearby buildings and threaten to down power cables.
According to Accuweather, more than 100 tornadoes struck the southern states over the weekend, including a record-breaking twister in MS that was over two miles wide.