Drones flying overheard equipped with heat-seeking devices had scanned the area for survivors, but the dangerous conditions halted the search, Sheriff Jones said. (Representational Image)
At least two people were killed, CNN reported, while local television stations reported many people as yet unaccounted for.
Trees were uprooted and mobile homes toppled in Johnston county, as well as in Murray county, KFOR television said.
One man was killed in Garvin county, KFOR reported.
A second confirmed rain-surrounded tornado then ripped across Ninnekah around 4:00 pm (2100 GMT) local time, the report said.
Near Stillwater, roofs were ripped off homes, and an empty bus was blasted upward and left dangling in a tree, the channel reported.
The first confirmed twister hit near Elgin, in Comanche county. \"Strong winds and hail as large as grapefruits were reported,\" News9 television reported. \"It was nearly a mile wide.\"
Trees were uprooted and mobile homes toppled in Johnston county.