A man was walking alone when the incident took place around 5pm on Tuesday June, 3.
A 12-year-old girl and a 13-year-old girl were playing football on the path, leading up to Yarrow Road.
An unknown man walked past the two girls, turned around and walked towards them.
As he approached them he was indecently exposing himself and urinating at the same time.
He said “hello” to the two girls before zipping up his trousers and walking off.
The offender is described as an Asian male, of a medium build and around 5ft 8ins tall with short dark hair. He was wearing blue jeans, black boots and a sky blue jacket, which was zipped up to cover his mouth.
Anyone who may have information which can help police with the investigation was asked to contact Humberside Police by calling 101 quoting crime reference 2048240.
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