Bedfordshire Police are appealing for witnesses after two children were approached by a car and invited to get inside by the driver in separate incidents.
One child was walking along Adlington Road, Luton, on Thursday at approximately 8.45pm when he was approached by a man in a car.
He invited the child to get into the car, and when he refused, the man got out of the car and shouted after him.
He is described as black, approximately six foot tall, in his 50s, with grey hair, a scar on his cheek and a tattoo on his arm. He was believed to be wearing a black jacket and jeans, the car is described as a white BMW convertible.
Earlier that evening, at approximately 5.50pm, another child was walking in St Vincent Gardens, Luton, when he was approached by a man in a car who invited him to get into the car to go to his house.