At least four people were killed and several others injured after severe weather, including two possible tornadoes, struck St. Louis on Friday.

The storms damaged about 20 square blocks, with search-and-rescue operations ongoing.

One tornado was reported near Forest Park, with another possible touchdown still being investigated.

Ten patients, including one in critical condition, were taken to St. Louis Children’s Hospital.

Damage included collapsed buildings, downed power lines, and destroyed homes, NBC News has reported.

Officials urged residents to stay indoors as emergency crews respond, and more storms may follow on Saturday.

Written by B.C. Begley