A lightning strike is the most likely cause of a barn fire that claimed the lives of eight horses in Massachusetts Tuesday night, according to fire officials.

Eight horses were killed in a fire at a 150-year-old barn in Walpole, Massachusetts. It's not yet known what caused the flames, but lightning is being eyed as a possibility. It happened around 11:15 p.m. Tuesday at Mor Linn Farm on North Street. No one was hurt in the fire, but 10 other horses survived.

Eversource line worker John Cox, of Weymouth, describes what it was like trying to help horses caught in a barning Walpole barn.