Reading Mayor Eddie Moran says he and the chief "agreed a change of strategy was needed" in addressing public safety and violence.
The mayor also stated that he will soon be appointing an interim chief while a search is conducted for new leadership.
Tornielli will officially retire Monday and says he plans to follow a new career path.
It is unclear what that career path may be.
Moran first appointed Tornielli as police chief back in January 2020.
He served the department for 22 years.