New video this morning showed investigators carrying out a gun from the home at the 18300 block of Carriage Lane.
The bodies of 62-year-old Kenny Cordray and his 33-year-old son Kelly were found inside the home.
According to neighbors, there was an argument followed by gunshots Sunday.
Authorities are questioning Kenny's wife, who witnessed the crime, for a possible motive.
"She's doing fine and a little stressed out," Detective Glenn Sharp said.
Kenny and his son were seen in Facebook photos making music together just this week. According to Kenny's Facebook profile, he is a member of the Grammy's and has written a song for ZZ Top.
No other details have been released.
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