Two teenagers are in custody in connection with the severe beating of a motorist in Detroit who stopped to help a boy he hit with his car. 

The two teens are suspected of being among a group of around a dozen people who attacked the driver, who remains in critical condition in a Detroit hospital. 

Steven Utash accidentally hit 10-year-old David Harris after the boy stepped from a curb into traffic. 

Harris was released from the hospital on Thursday. 

Police say they are not planning to charge Utash in the accident.