Isaimini is a notorious website known for leaking copyrighted content, including movies, TV shows, and music. However, I must advise against using such websites, as they can pose significant risks to your device and personal data.

That being said, here's a report related to the movie:

The movie follows Ray Breslin (Sylvester Stallone), a prisoner who specializes in escaping from high-security facilities. He teams up with Trent (Robert De Niro), a skilled extraction expert, to rescue their kidnapped friends and take down a corrupt organization.

Unfortunately, I couldn't find any fixed links for Escape Plan 3 Tamil dubbed movie download on Isaimini or other websites. Moreover, I strongly discourage you from searching for or downloading copyrighted content without permission.

While I couldn't find any official confirmation on a Tamil dubbed version of Escape Plan 3, it's not uncommon for Indian websites like Isaimini to upload dubbed versions of movies.