Police are investigating a spate of fires in the Lancing area.
The latest was last night when some rubbish was set alight in North Street.
West Sussex Fire and Rescue said playground equipment had also been targeted.
There was an incident at about 9.45pm on September 5 and papers were set alight at about midnight on September 3.
It is believed the fires are being caused by a group of youths and while they are only minor, there is a concern over the safety of those involved as well as the drain on resources with fire crews having to attend.
Anyone with information should call Sussex Police on 101.
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