Neighbour Stacey Glover told the Dallas Morning News that a party at the home had started early in the afternoon and she had seen people laughing and grilling outside. She says she then heard the shots about 8pm. She opened her door and smelled gunpowder. She heard police who arrived yell "hands up" before more shots rang out.
Neighbour Lauryn Nichols said she had a friend who had been in the house and she didn't know what had happened to the person.
"I'm worried," she told the newspaper. "It's like one big family here."
Police have not determined a motive for the shooting. Additional details were not immediately available.
Tilley said that a shooting of this magnitude was unusual for Plano, especially in such a quiet neighbourhood. He could not say whether police had been called to the home before Sunday.
A police investigation is ongoing.
- AP