There was a huge emergency services presence in the Portland Basin area of Ashton on Tuesday evening.
Several police vehicles were seen close to the museum car park at around 5.30pm.
A Greater Manchester Police spokesperson said the force was called to reports of concern for the welfare of a man.
Read more from the Tameside Reporter
Click here for more of the latest news
Click here to read the latest edition of the paper online
Click here to find out where you can pick up a copy of the paper

New Oldham & Tameside project celebrates dance heritage
Local swim school celebrates a decade since transforming derelict pub into community hub
New Portland Basin Museum exhibition explores Tameside’s medical past
Prolific burglar jailed following Tameside crime spree