Eight separate thefts have taken place at B&Q in Hemel Hempstead.
Drills, chainsaws and bolt cutters are among the items stolen from the Two Waters Road store, since Thursday, June 1.
Hertfordshire police have now released eight images of individuals that they would like to speak with.
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A spokesperson for Hertfordshire Constabulary said: "We are releasing images of several people we would like to identify following a number of thefts from B&Q in Hemel Hempstead.
"Officers believed that the people pictured may be able to assist with ongoing enquiries into the incidents.
"If you recognise any of these people, please contact PCSO Nigel Haggar via email to nigel.haggar@herts.police.uk, quoting the relevant crime reference specified on the image."
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Information can also be reported online at www.herts.police.uk/ro/report or by calling the police's non-emergency number 101.
Anonymous information can be given by contacting Crimestopppers on 0800 555 111 or via crimestoppers-uk.org.
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