Local authorities have not yet confirmed the cause of the sound, and it remains unclear whether it was linked to an industrial incident, military activity or another event.

A massive boom was heard across Gosport after a bomb was discovered in a garden.

A suspected shell left over from World War II exploded under a house, killing five people and wounding nearly 20, police said ...

People across eastern Massachusetts reported hearing an extremely loud boom on Saturday afternoon, and many police departments in the state said they were inundated with calls, but what exactly was ...