(CNN) -- A Texas county district attorney and his wife were found dead in their home Saturday night, two months after a county prosecutor [in the same office] was gunned down.

The Kaufman County Sheriff's Office is in the preliminary stages of investigating the slaying of Mike McLelland and his wife, according to Justin Lewis of the sheriff's office.

Lewis said he did not know if the deaths Saturday were connected to the killing of Assistant District Attorney Mark Hasse, who was shot and killed on his way to work in January.

According to the DA's office website, McLelland and his wife, Cynthia, had two daughters and three sons. One son is a Dallas police officer.

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