Police are investigating the attempted abduction of a girl who was walking home from school at Springfield Lakes.

Police are investigating an attempted abduction after two schoolgirls were approached by a man on a motorcycle southwest of Brisbane.

The girls, aged under 14, had left school on Wednesday afternoon and were walking along Highlands Terrace in Springfield Lakes when the man approached them.

Police say he directed one of the girls to the motorcycle and touched her arm.

The girl refused, the man rode away, and the girls ran to a nearby house.

Police say he was wearing a closed-face helmet and riding a black, white and red motorcycle.

He is described as slim, aged between 40 and 60, with grey or blond shoulder-length hair.