An elderly man's accused of committing indecent acts inside the public change rooms at Bar Beach.
Police say a 12 year old boy witnessed the 75 year old performing the lewd acts twice between last Thursday and Monday.
The boy reported the incidents to lifeguards after seeing the man at the beach on Monday afternoon.
Police were called and arrested the elderly man.
He'll face Newcastle Local Court today charged with two counts of commit act of indecency with person under 16 years.