At around 3:15 p.m. ET, a 6-inch gas main ruptured along the 6300 block of Cardiff Street, near Holabird Avenue and Joplin Street.
Holabird Elementary School has been evacuated as a precaution.
Officials say no residential evacuations are necessary at this time.
The Baltimore City Fire Department is on the scene and Baltimore Gas and Electric crews are en route to shut off the gas.