An “imperfection” in a pipe may have caused the gas explosion that killed five people in Allentown, PA, last week, investigators said.
The Feb. 9 explosion flattened a pair of row houses and set fire to a block of homes, killing five people — including a 4-month-old boy and a 16-year-old girl.
The explosion emanated from an underground gas main that lacked shut-off valves. It took utility workers five hours of punching through ice, asphalt and concrete to seal the 12-inch main.
On Saturday, investigators said they were looking at an abnormality in a section of pipe.
Fire Chief Robert Scheirer said workers were going to dig up the section of pipe and take a closer look. The Pennsylvania Public Utility Commission will then send the pipe to a forensics expert.