Four people, including two children, were seriously injured after the car they were in rolled into a storm drain on Saturday, paramedics said.

Netcare 911 spokesman Jeff Wicks said a one-year-old and a 10-year-old boy were critically injured.

Their mother and uncle were seriously injured.

All four were transported to the RK Khan Hospital in Chatsworth.

"It has not yet been determined on how the car rolled into the storm drain," Wicks said. - Sapa