Around 8:30 Tuesday morning, an underground explosion erupted, shattering glass and sent man hole covers flying.
"The explosion was like a bomb went off," said Dominic Muro, owner of Muro's New York Bakery on Main Street.
That explosion caused Muro's New York Bakery and surrounding businesses to lose power.
Deputy Chief Ed Prescott of the Norwalk Fire Department said, "It [the man hole cover] was underneath an SUV that was parked over it. The man hole came up, hit the SUV. The concussion blew some patrons that were inside the New York Bakery across the floor. The glass actually shattered and just dropped straight to the ground, which was a plus. It didn't really shoot to much inside although some glass did get inside the bakery, but not as much."
"A couple of guys were knocked down off the tables on to the floor, everybody scrambled. Glass was flying all over the place and the car outside jumped up about 4 feet," said Muro.
According to the Norwalk Police Department, there were two minor injuries that were evaluated by EMS personnel at the scene but decline medical transport to the hospital.
"Usually we have tables out here every morning for the Norwalk River Rowing Club. They were here but they were inside because we didn't put the table out because of the weather. It's exactly where everything happened. It could have been really disastrous," added Muro.
The explosion is believed to be electrical in nature.
"They are replacing one of the lines they felt they had an issue with the electrical line, the electrial service that is under the road. They are going to try to re-energize the power to ensure everything is ok. Then the Yankee Gas company will go down to the electrical vaults to see if there was any gas present inside the vault," Deputy Chief Prescott.
The Norwalk Fire Department hopes to have Main Street cleared around 1 pm.