A mother, father and their two young children were found shot dead in an apparent murder-suicide, according to police in Texas.

A babysitter called police Monday evening and requested a welfare check after not hearing from the family at their Houston home, and all four — including kids a 4-year-old and 8-year-old — were found dead inside, according to the Houston Chronicle .

It was not immediately clear who was behind the killings, but police have said it appears to be a murder-suicide.

Few details have been released about the apparent murder-suicide. KHOU

None of the victims has been identified as police continue to investigate what happened.

A neighbor said the family had not lived there long, but she had seen them out and about in the neighborhood.

A 4-year-old and 8-year-old were killed, police said. KHOU

“It’s very sad,” that neighbor told KHOU . “I just shake for the little kids and the family and we don’t know all the details.…