KINGSTON, N.H. — One New Hampshire family’s gender reveal party caused a large explosion that could be heard in several towns and in Massachusetts, police said.

Kingston police responded to Torromeo quarry where they found people who acknowledged holding a gender reveal party involving explosives and thought this would be the safest spot to hold it.

NBC 10 Boston reports that residents in several neighboring towns could hear the explosion and some though it was an earthquake. Many called 911. Others said the explosion was so strong it rocked their homes.

“We heard this god-awful blast,” Sara Taglieri, who lives in a home that abuts the quarry, told the television station. “It knocked pictures off our walls … I’m all up for silliness and what not, but that was extreme.”

The source of the explosion was 80 pounds of Tannerite, an over-the-counter, explosive target used for firearms practice sold in kit form, police said. The person who purchased and detonated the explosives has turned himself into police. He was not identified.

Police said an investigation is ongoing and they will make a determination on what charges will be forthcoming.