Parents and pupils are being warned to be on their guard after a motorist was seen acting suspiciously near two schools.
Thames Valley Police alerted schools in the Aylesbury Vale area after reports that a man was beckoning children towards his vehicle in Pitstone and Ivinghoe.
A police spokesman said: “We have taken reports of a vehicle acting suspiciously close to school premises in Gullicott Lane, Pitstone on Saturday, January 9 and Maud Janes Close in Ivinghoe on Tuesday, Jaunary 12.
“We are currently investigating the circumstances around these incidents but officers are keen to hear from anyone who may have seen a green Vauxhall hatchback, possibly an Astra model, in or around these areas between the hours of 7.30am and 8.15am in the morning.
“Please call 101 with information.
“Neighbourhood Officers on patrol in these areas can also be approached with information or if you have any concerns.”