Update 12:15pm:
The man pictured has been identified. Police have thanked the public for their assistance.
Previous 9.50am:
Detectives have called on the public to help with their investigation into an assault at the Mandurah Recreation and Aquatic Centre on November 16.
Between 2-3pm, a teenage boy was assaulted by an elderly man at the Pinjarra Road centre.
Shortly afterwards, the man re-approached the victim and spoke with him briefly before leaving.
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Mandurah Detectives would like to speak to anyone who may have seen the assault, or the elderly man talking with a teenage boy around this time.
Detectives believe the man pictured may be able to assist with their investigation.
The man is described as fair skinned with a medium build, 60-65 years of age with grey hair.
He was last seen wearing a blue shirt, light coloured shorts and white sneakers.
He was also seen carrying a blue sports bag.
Anyone with information regarding this incident, or who knows the man pictured is asked to call Crime Stoppers on 1800 333 000 or to make a report online at crimestopperswa.com.au.