UPDATE: A NASA contract worker who barricaded himself in a Johnson Space Center office building has killed himself and a hostage, police said.
SWAT officers surrounded Building 44, which houses communications and a tracking development laboratory.
Police Capt. Dwayne Ready said he had no idea what the man’s motive was, but described him as being between 50 and 60 years old, armed with a handgun.
The man was believed to be an employee of Jacobs Engineering, which has an engineering technical support contract with NASA, said Jacobs executive vice president John Prosser.
“We understand it is one of our employees,” Prosser said. “Beyond that, we have no comment.”
Stay with myFOXhouston.com for more information as it becomes available.