Timeline of events in Shannon Miles case

HOUSTON, Texas (KTRK) -- Shannon Miles, who was accused of shooting and killing Harris County Sheriff's Deputy Darren Goforth at a gas station in 2015, has pleaded guilty to capital murder for his role in the killing.

Deputy Goforth's widow Kathleen addresses the public following Shannon Miles' guilty plea.

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Family and friends remember Deputy Darren Goforth at Second Baptist Church on September 4, 2015.

KTRK Photo/ KTRK

Miles' mental state at the time of the August 2015 shooting has been in question over the course of the pre-trial proceedings.

Miles' attorney stated his client has a history of schizophrenia and psychotic episodes. The insanity defense was being explored, saying Miles didn't even remember the day of the murder.

Miles was transferred to a state mental facility after his arrest.

Last year, a judge found Miles incompetent to stand trial, but that was reversed earlier this year.

ALSO: Woman claiming to be Goforth's mistress speaks exclusively to ABC13

The woman at the center of Harris County Deputy Darren Goforth's murder investigation and scandal hasn't spoken -- until now.

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