UPDATE 6:03 p.m.: Mike Rizzo explains the how the decision was reached, but no timeline is included (Mike Rizzo on the decision to postone Nationals-Braves game Nationals Journal, The Post):
Rizzo said the Nationals felt it was inappropriate to make a decision until all they gathered all the information from the unfolding incident and relevant team officials.
“Because of the [logistics] that go into this and the immense coordination that it takes to make these decisions with federal, state and local authorities,” Rizzo said. “It’s just a timely process.”
UPDATE: Game post-poned, not “official” but two sources are good enough:
A mass shooting at the Washington Navy Yard (WUSA), which Nationals Park is adjacent to, has left several dead and is still under investigation.
The Nats need to just postpone tonight’s game with the Atlanta Braves already (The Post). Also, lower the flags to half-staff.