All images are from Franklin, Texas.

Powerful storms moved through the Southern US, killing at least three people and spawning several tornadoes, including several "large and dangerous" twisters that left significant damage and caused dozens of injuries in East Texas.

The Angelina County Sheriff’s Office confirmed that two children, aged 3 and 8, were killed Saturday after a tree fell on the vehicle they were in during a severe storm.

The children's parents were able to exit the vehicle safely.

Meanwhile, a long-track tornado began Saturday morning south of Calvert, in Robertson County, before hitting the town of Franklin, located about two hours east of Waco.

There have been reports of injuries, down trees, flipped trailers and damaged homes. There have also been reports of collapsed buildings downtown.

Robertson County Sheriff Gerald Yezak told The Weather Channel there were numerous injuries, including many "walking wounded." He said others were taken to the emergency rooms but he couldn't say how many. He noted there were no reports of fatalities.

Yezak later told the Associated Press two people were admitted to an area hospital with non-life-threatening injuries.