A Nevada woman is believed to have killed her husband and their two sons in a triple murder-suicide, the Reno Gazette Journal reports.

Authorities this week found the bodies of 53-year-old Joan Huber, 50-year-old Adam Huber, and their sons, 17-year-old Adam and 16-year-old Michael.

Investigators have not identified a motive for the slayings, but believe Joan Huber shot her husband and the boys before killing herself.

Police arrived at the family’s Reno home around 11 a.m. Wednesday, prompted by concerns of friends and relatives who had not seen the family for days.

Reno Police Department spokesman Travis Warren said the murder-suicide is believed to have happened at some point before March 4, KRNV-TV reports.

JUST IN: The suspect in the south Reno murder-suicide has been identified as Joan Huber. Reno police say she shot her husband and two boys.https://t.co/uyVttsfo29 pic.twitter.com/ruZ3kBldt3 — KRNV (@KRNV) March 7, 2020

The teenage boys attended Damonte Ranch High School, which is providing counselors and other resources to help students process and grieve the deaths.

Adam Huber had worked at Reno Buick GMC since 2006 as a master technician. The dealership issued a statement saying that it was cooperating with investigators.

“We mourn the loss of Adam and his family,” the statement read.

Joan Huber was an Irish national whose mother and siblings still live in Ireland. A family friend told the Irish Times: “I know them to be a good, hardworking honest family and pillars in the community and the type of people you would like to be friends with. It’s so tough and so hard. It’s very hard to understand why these things happen.”

The family had been part of the Irish heritage group “Sons and Daughters of Erin” and had purchased a table for a St. Patrick’s Day dinner.

Willie Puchert, the organization’s president, told the television station that the club would remember the family by placing candles on an empty table, having a moment of silence and playing “Amazing Grace.”

To report information about the case, call contact the Reno Police Department at 775-334-2188.

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