(KMOV) -- Police confirm 12 people were involved in a multiple car accident in O'Fallon, Mo. this evening on the 7100 block of Twin Chimney's Blvd. Police say two SUVs crashed into each other on Twin Chimney's Blvd.
Police do not know who is at fault.
Officials say four accident victims remain in serious condition and the remaining eight victims are in stable condition.
Police continue to investigate the cause.