(CNN) Three officers are feared dead after a shooting in Baton Rouge, Louisiana, officials said.

Kip Holden, the mayor-president of East Baton Rouge Parish Kip Holden, said authorities were still trying to get a handle on the situation, but added, "The count is three officers dead possibly."

The victims may include police officers and sheriff's deputies

"There is still an active scene. They are investigating," he said. "Right now we are trying to get our arms around everything."

The shooter is believed to be down as well, Holden said.

"Everything is moving fast and I have not been able to verify everything," he said.

Authorities did not immediately say where the Sunday morning shooting occurred, or release additional details.

But Baton Rouge Police Cpl. L. J. McKneely said "multiple" officers were down. He couldn't elaborate on the extent of their injuries.

The scene, however, is contained, McKneely said.

Developing story - more to come