Updated Fri, Feb 28, 2014 3:32 pm
Authorities in Columbus were trying to determine the source of several explosions downtown overnight that blew off manhole covers, set off fire alarms and flooded emergency responders with calls.
At least three blasts, apparently underground, occurred in the early hours of Friday morning. Officials said they apparently are related to problems with equipment belonging to a power company.
Police cordoned off streets, and the electric company cut power to several surrounding buildings, closing or delaying work for some downtown employees. Some traffic lights were knocked out. Smoke was seen coming from one of the manholes.
The investigation was continuing. No injuries were reported.