A young girl managed to escape from a man who police fear was trying to abduct her as she walked in a town.
An "urgent appeal" was made after the child was seen being grabbed by the arm at about 13:00 GMT on Wednesday in Southampton Street, Reading.
The girl, about 10 years old, freed herself before the man cycled away, Thames Valley Police said.
She has since been identified and police are appealing for anyone with information to come forward.
The force said the witness who reported the "potential attempted child abduction", heard the man ordering the girl to come with him before fleeing on a silver and black bike.
The man was described as white, about 5ft 10ins to 6ft tall, of average build and in his 40s.