Thieves broke into three cars on a Maldon estate in the same night.
Documents were stolen from a blue BMW 3 Series parked in Mariners Way between 6pm on Friday and 6.30am on Saturday.
There was also damage to the area around the ignition.
The lock of a Vauxhall Vivaro van, parked in Mariners Way, was tampered with between 11.30pm on Friday, and 9am the following day, and tools stolen.
Suspects gained entry to a silver Vauxhall Astra parked in Tideway between 10pm on Friday and 8am the following day, but did not remove anything.
Anyone with information is asked to call Maldon police on 101.
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