Two twin girls were killed after a tree crushed their house during a horrific storm while they slept.

An EF-1 tornado with wind speeds up to 95mph ripped through the hamlet of Clark Mills early Sunday morning, reported WSYR.

Six-year-old twin girls, Emily and Kenni Bisson, were killed when the ferocious winds knocked a tree down onto their home on Hoyland Avenue, according to the Oneida County Sheriff's Office.

Their mother, Kayleigh Bisson, 37, called 911 to report that the roof collapsed onto her, and she could not locate her daughters.

Investigators were able to locate both of the girls, and they were pronounced dead at the scene.