DETROIT -

Detroit Mayor Dave Bing is scheduled to make what his staff is calling a "major announcement about his political future" during a 12 p.m. Tuesday news conference at the Charles H. Wright Museum of African American History.

In April, Bing said he had gathered the paperwork necessary for a re-election campaign but he had not decided if he would actually be a candidate for mayor. Tuesday is the filing deadline.

"You know the window is obviously closing. I've said for several months at this point that I had not made my mind up and that's still true today," he said.

The news conference will be held at the theatre inside the museum which is at 315 East Warren Avenue in Detroit.

Bing, 69, was elected Detroit mayor in May 2009.

If he does decide to join the race, Bing will join a list of candidates including Wayne County Sheriff Benny Napoleon and former Detroit Medical Center CEO Mike Duggan.