MINNEAPOLIS (WCCO) – A Minnesota woman says her brother died in the Sunday night massacre in Las Vegas.

Emily Alvarez, a teacher in Minnetonka, tells WCCO-TV that her older brother was among those killed in what’s being described as the worst mass shooting in recent U.S. history.

So far, officials say that the shooting killed 58 people and injured at least 515 more.

Alvarez did not release her brother’s name or other details, citing family concerns.