Update: 1:45 p.m.
Police said the accident occured at 3:25 a.m. and involved a truck from Phil's Transport LLC out of Trumbull. Monroe Volunteer Emergency Medical Service personnel attended to the 31-year-old male driver, who was uninjured, according to police.
An officer told Patch that the truck was going too fast on a curb on Pepper Street when it rolled over, spilling gasoline and trash.
Stepney volunteer firefighters and Connecticut Department of Energy & Environmental Protection personnel were called in for the clean up effort, according to police.
The State Police Truck Squad was also called to the scene to inspect the truck for potential violations.
At 10:50 a.m. orange cones closed off access to Pepper Street from the northern portion of Route 25 and a police cruiser with its strobe lights on also deterred traffic coming from the Tollgate Plaza shopping center nearby. A truck carrying garbage had rolled over in an accident earlier Friday morning.
Trash is all over the street by a driveway of one business and workers are currently cleaning up the mess.
This story will be updated as more information is gathered.