CINCINNATI - Police say four people are dead, including the gunman, in a downtown Cincinnati bank shooting.

Police Chief Eliot Isaac said the shooter opened fire early Thursday morning at the loading dock of the Fifth Third Bank building.

Isaac said the gunman then entered the bank's lobby where he exchanged gunfire with the shooter. It's unclear if the gunman shot himself or was shot by officers.

One of the victims died at the scene.

Cincinnati Mayor John Cranley said the gunman was "actively shooting innocent victims" and that it was a "horrific" scene.

The police department tweeted it as an "active shooter/officer involved shooting incident." The situation appeared to be under control shortly before 10 a.m. EDT Thursday but police said they are still investigating.

An officer at the scene says there are at least two, and possibly more, people who've been shot. It wasn't clear immediately if the shooter was one of them.

At least two ambulances were seen leaving the scene.

Streets around the building at the city's Fountain Square were closed as were sidewalks.

People in and around the building reported hearing a series of gunshots.

Federal agents were on the scene.

WXIX-TV is reporting that two people are dead and four others are in critical condition after a shooting at or near a bank.

CBS reporter Jeff Hirsh tweeted this, showing two ambulances leaving a shooting scene downtown.