An 8-year-old girl and her grandfather were seriously injured when a plane crashed Sunday in the 900 block of Millers Mill Road in Stockbridge.

The man in his 40s was taken to Grady Memorial Hospital, and the child was airlifted to Children’s Healthcare of Atlanta when a Cessna 150 crashed into trees while trying to land in a field near Millers Mill Road at 2:30 p.m., the Henry County Fire Department confirmed to Channel.

The man suffered broken bones and head injuries, and the child also broke bones, the television station reported.

Family members of the two people aboard said the family dog was killed in the crash.

The Federal Aviation Administration and National Transportation Safety Board are investigating the cause of the crash.