A teenage boy was allegedly assaulted at the Mandurah Aquatic and Recreation Centre earlier this month.
Mandurah detectives said a man is currently assisting police with inquiries in relation to the alleged assault.
During the afternoon of Friday, November 16 a teenage boy was allegedly assaulted by an elderly man at the MARC on Pinjarra Road.
Shortly afterwards the man re-approached the victim and spoke with him briefly before leaving.
READ MORE: Man wanted over Mandurah Aquatic Centre Assault
It's not yet know if any charged will be laid or if the man assisting police will be taken into custody.