One person at the home was hospitalised.
Hinojosa said he had no ages or identities of the dead and wounded.
"I have to start funeral arrangements and don't know where to begin with that", said Simpson in an emotional post.
Fire officials in Ponder, 30 miles (50 km) north of Fort Worth, told NBC 5 that five people were found dead inside the home and the shooter was among the dead.
5 folks had been discovered lifeless in a rural North Texas dwelling Wednesday after police say a person entered the house of his ex-wife, and shot and killed her three kids and her boyfriend earlier than killing himself.
A automobile is towed as Denton County Sheriff's officers examine the crime scene. Officials said the suspected shooter died from a self-inflicted gunshot wound and said there is no threat to the community. Police did not release the names of the victims.
Law enforcement agents investigate the home in Ponder, Texas, where five people were found dead on May 16, 2018.
Neighbors were shocked as word quickly spread up and down the street what had happened inside the home. Her condition is unknown, but she was transported to a hospital. "Regretful, regretful really sad pray for them, pray for the family, pray for the neighborhood".