A tourist had his knapsack stolen and suffered minor injury after he was attacked by thieves on a motorcycle.A 17-year-old has since been arrested in connection with the incident, which happened around 4.15pm on Thursday in Hamilton Parish.The suspects are described as black males. At the time of the incident, both were wearing silver helmets; one had on a grey T-shirt.The pillion passenger was said to be 5ft 10in.Anyone with information is asked to contact DC Elesa Brown on 295-0011.