HOUSTON -- A NASA contract worker armed with a handgun killed a hostage and then himself Friday after a nearly four-hour standoff in an office building at Johnson Space Center.
Houston police say a second hostage, a woman, escaped with minor injuries.
The gunman was identified as an employee of Jacobs Engineering of Pasadena, California.
Police say he shot himself once in the head more than three hours after barricading himself on the second floor of Building 44, which houses communications and tracking development lab.
Authorities said the slain hostage, a man, was likely to have been shot "in the early minutes of the whole ordeal."
None of those involved were immediately identified.