Johnson Space Center Locked Down

The Johnson Space Center in Houston has been locked down after reports of a gunman loose inside building 44 at the complex. That is just about all that is known at this time.The building has been evacuated and police and a SWAT team are at the building.

HOUSTON - A Johnson Space Center building was evacuated Friday after reports of a gunman inside, Houston police said. Police were called about 1:40 p.m. for Building 44, which houses communications and tracking development laboratory, news reports said.

NASA employees and contract workers were kept informed of the situation by email, including the first one which began, "We have a report of a weapon in Building 44."

Johnson Space Center security officers and Houston police, including a SWAT team, were dispatched to the scene.

NASA spokesman Bill Jeffs said he could not confirm whether there was a gunman or whether any shots were fired.

But a SWAT team and an armored police vehicle approached the building shortly after 4 p.m. CDT.

Will update as more becomes available.

UPDATE: Police are reporting that a man with a gun is barricaded inside building 44. At least two shots have been fired, but there are no reports of injuries. The gunman is described as being between 50 and 60 years old but no other details yet.