MESQUITE, Texas (CBSDFW.COM) – Forney High School is mourning the loss of sisters Natasha and Alexa Haydel, who Mesquite police say were killed by their 63-year-old father, Raymond.

The district released their names on Tuesday night.

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Natasha and Alexa Haydel (courtesy: GoFundMe)

The murder-suicide happened Monday night in the 1300 block of Bradford Place.

When officers arrived, they found Raymond Haydel with a gunshot wound to his head, lying on the floor inside the home.

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As officers continued their search, they found Natasha, 17, and Alexa, 16, dead from multiple gun shot wounds.

Investigators said Haydel shot his children, then committed suicide.

Wes Hardin of Forney is the father of one of the girl’s boyfriends. He said it’s still unclear why their father would commit such a cruel act of violence on his own daughters.

“We know what we need to know and sometimes things happen that you don’t want to put a reason on. Of course we are angry but we know the girls would want us to celebrate their life… the outpouring of support from the kids is amazing.”

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Forney High School is offering online visits with grief counselors to classmates of the two girls.