A capital murder investigation is underway in Alton, where three people are dead. The incident began with a disturbance call on Tuesday night, leading police to a home where two people were found deceased. A third person was taken to a hospital for treatment but later died.

One person is in custody in connection with the incident. Further details on the investigation are available from the Alton Police Department and the Hidalgo County Sheriff's office, which are handling the case.