The Marshall Space Flight Center sent an alert at 10 a.m. this morning warning everyone to avoid the area of the Sparkman Center because a "situation" existed.

A second message sent thirty minutes later read, "An active shooter has been reported at the RSA Sparkman Center. Personnel in this area take protective action now. This is not a drill."

An active shooter drill was planned for tomorrow, however, officials say the current situation is not part of the drill.

All gates are closed at this time.

Live coverage continues on Huntsville stations.