A manhole fire caused a loud explosion sound near Union Square Friday morning, the FDNY said.
A call came in shortly before 8 a.m. about a fire in a manhole at Broadway and 12th Street, a spokesman said. The FDNY tweeted that multiple manholes were on fire, but did not have an exact number.
People nearby tweeted that they heard a loud explosion sound.
“Giant explosion behind me on Broadway as I was walking to work,” one user wrote.
The cause of the fire in under investigation.