Police would like to speak to three people in relation to attacks on vehicles in High Wycombe on Saturday and Monday.
Nine vehicles were damaged in Dashwood Avenue at about 5.40pm on Saturday.
Thames Valley Police would like to speak to a slim Asian man in his late teens to early twenties in relation to the damage in Dashwood Avenue.
Officers would also like information about the movements of a dark-coloured hatchback car, thought to be a Vauxhall Corsa, in the area.
On Monday, six vehicles were damaged in Pettifer Way at about 6pm.
Officers would like to speak to two Asian boys in relation to damage in Pettifer Way. Police said they were aged 14 to 16, slim and about 5ft 3ins to 5ft 5ins in height. They were wearing dark clothing.
About 200 cars are believed to have been damaged in the town this month following the inquest verdict into the death of Habib Ullah, who died in police custody.
This latest appeal for information follows an offer of £1,000 put up by Crimestoppers as a reward for information resulting in an arrest and charge of those involved.
Police said eight people from the Wycombe area have been arrested and released on police bail.
These include an 18-year-old man, two 19-year-olds, a 20-year-old man, a 22-year-old man, a 26-year-old man, a 27-year-old man and a 17-year-old boy.
Anyone with information can contact Thames Valley Police on 101 or contatc Crimestoppers anonymously on 0800 555 111.
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