Authorities have announced the ages of the three children and one young adult who were killed on April 28 when a person struck them with a vehicle in Chatham.

Two 7-year-olds, an 8-year-old, and an 18-year-old were killed, Illinois State Police said in a news release Tuesday morning.

Six additional children were taken to area hospitals, and one remains in critical condition, police said.

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Authorities have identified the driver as 44-year-old Marianne Akers.

Akers is not being held by police, due to the crash being under investigation, ISP said.

Akers was not injured but was transported to a hospital for evaluation, according to an earlier release.

“This does not appear to be a targeted attack,” ISP wrote, and that the cause of the crash remains under investigation.

(This story has been updated with new information.)

Tom Ackerman covers breaking news and trending news along with general news for the Springfield State Journal-Register. He can be reached at [email protected].