Update:

The Post Dispatch is reporting that the officer was on routine patrol and responded to a break in at a business. One of the suspects fired at the officer as he approached on foot.

Breaking:
KMOV.com is reporting a police officer has been shot in the arm in Ferguson.

St. Louis County Police confirm to News 4 a Ferguson police officer has been shot. A police staging area has been set-up around the area of West Florissant and Stein. Multiple police departments are responding to the scene.
The officer was shot in the arm. The condition of the officer was not released.
West Florissant Road from I-270 to Chambers has been closed as police search for suspects. Reports indicate the suspect fled on foot. K9 officers and police helicopters are canvassing the area.

When will the residents of Ferguson finally have peace?