"Gas Issue" Is Putting It Mildly

Infrastructure Week:

 WCVB:

State police: Columbia Gas customers in Lawrence, Andover, North Andover should evacuate  —  LAWRENCE, Mass. —  Authorities were responding to dozens of fires and explosions that are being blamed on a gas issue across the Merrimack Valley Thursday afternoon.

CBS Boston:   Multiple Suspected Gas Explosions In Lawrence, Andover And North Andover

Alizachasan / WPIX 11 New York:   Explosions damage so many homes in MA 'you can't even see the sky'

What th'? Sabotage? Terrorism? When do gas lines spontaeneously blow up?