A grandmother and four of her grandchildren have been killed in floods in Texas caused by a storm system that has unleashed tornadoes, damaging hail and torrential rains on several central US states.
The flood victims in Palestine, Texas, escaped a house where flood waters had reached the roof line and were then swept away by the rushing waters, Palestine police Captain James Muniz said.
"They were able to get out, but they were washed away," he said, adding their bodies were recovered on Saturday (local time).
The grandmother was aged 64 and the children between six and nine.
The National Weather Service issued a severe thunderstorm watch on Saturday extending from the Houston area, where floods this month have killed eight people, into much of Louisiana.
It has also issued a flash flood watch extending from Texas into western Tennessee.
"Strong to severe thunderstorms are expected today into this evening across the lower Mississippi Valley, Tennessee Valley, Ozarks and the Ohio Valley," it said on Saturday.
There were seven reported tornadoes from the storm system on Friday in Texas and Oklahoma, it said.
A twister caused damage to several structures in Ninnekah, southwest of Oklahoma City, local news reports said.