Millionaire businessman Tom Knox says he plans to run for mayor of Philadelphia in 2015.
The former health care executive, who lost to Mayor Michael Nutter in a five-way Democratic mayoral primary in 2007, says he filed paperwork last week declaring his intention to run.
Nutter is a two-term mayor barred by term limits from running for a third consecutive time.
In a statement Thursday, Knox says he is concerned about what he views as a stagnant city economy, high business taxes, gun violence and a troubled public school system.
He had briefly considered a gubernatorial run against Gov. Tom Corbett next year but recently announced he had decided against it.
Knox says he is contemplating a formal launch of his mayoral candidacy as early as next month.