Bystanders stepped in when a sex offender tried to get a young girl into his van in east Redding Friday night, according to police. 59-year-old Donald Platner of Shingletown allegedly drove up to the girl in a parking lot near Old Alturas and Churn Creek Road and demanded she get in his van. She fled to a group of her friends nearby. Platner then reportedly tried to contact her again by driving to where the group was, and they confronted him. Witnesses say he then got out of his van and challenged the juveniles to a fight. Some bystanders got involved and Platner left. He was later arrested by Redding Police and found to be a convicted sex offender. He was booked into jail on several charges.