Rolling updates. Check this post periodically for updates.
UPDATE: (06:10 am EST)
Thank God.
HQ is all clear. Thanks to all our LE and FD partners. "Explosion" was related to area construction project. HQ reopening now.
— Columbus Ohio Police (@ColumbusPolice) September 25, 2013
UPDATE: (11:02pm EST)
We are working with CFD to clear headquarters and begin investigation into cause of reported explosion.
— Columbus Ohio Police (@ColumbusPolice) September 25, 2013
UPDATE: (10:57 EST)
Area around the police station had streets shut down. Again no reported damage or injuries. Explosion was outside building. Searching underway all through building, parking lot, surrounding area.
All CPD personnel are safe. No damage or injuries reported. No known concern for downtown. Pay attention for area street closures.
— Columbus Ohio Police (@ColumbusPolice) September 25, 2013
UPDATE: (10:39 EST)
More reports of someone dropping something outside the building.
Police received a tip about someone dropping something down a manhole near #CPD HQ before possible explosion. Terrorism task force assisting
— WSYX ABC 6 (@wsyx6) September 25, 2013
HT: WoundedDove
UPDATE: (10:03 EST)
Explosion at #CPD was outside building. Employees from inside noticed someone toss device into bushes. Authorities looking at surveillance.
— Lucas Sullivan (@DispatchSully) September 25, 2013
There is also a lot of construction going on at building and authorities aren't ruling out mishap from that. #CPD #EXPLOSION
— Lucas Sullivan (@DispatchSully) September 25, 2013
HT: WoundedDove
UPDATE: (9:40pm EST)
The Franklin County Jail on Jackson Pike is also on lockdown now as well.
UPDATE: (9:12pm EST)
UPDATED STORY: Explosion Reported At Columbus Police Headquarters; Homeland Security Officials On Scene – http://t.co/ULp3IEaCTo
— 10TV.com (@10TV) September 25, 2013
UPDATE: (9:02pm EST)
Bomb squad officials are searching for explosives in a parking garage at Marconi and Spring. #CPD #10TV — @Glenn10TV
— 10TV.com (@10TV) September 25, 2013
UPDATE: (8:54pm EST)
10TV.com now reporting “suspicious persons were in the area” at the time of the explosion. (H/T VetGal1970)
UPDATE: (8:42pm EST)
A police dispatcher with the Columbus police dept tells the Associated Press that an explosion has been reported at the Police Headquarters of the Columbus Police Department. No injuries or fatalities have been reported.
UPDATE:
Ohio 10TV is reporting that the explosion (or at least the sound of one) came from the deli on the second floor of the Police HQ