COBB, Calif. – A Cobb man who was arrested late last week for killing his girlfriend died Sunday night in the jail, with the cause still under investigation.

James Michael Carpy, 44, had been arrested Friday night and held on $1 million bail following the discovery of the body of his 33-year-old girlfriend in the Hogan Hill Lane home they shared on Cobb, as Lake County News has reported.

Sources close to the investigation said he may have committed suicide.

Messages Lake County News left with the Lake County Sheriff’s Office administration Sunday night and Monday were not returned.

Chief Deputy District Attorney Richard Hinchcliff said the District Attorney’s Office is investigating Carpy’s death.

“The sheriff’s department called us last night and asked us if we could send an investigator over to conduct an investigation and we did so,” Hinchcliff said Monday morning.

Hinchcliff said two District Attorney’s Office investigators responded to the jail Sunday night.

He said he could not release any details about Carpy’s cause of death, deferring that to the sheriff’s office.

“The investigation is ongoing,” Hinchcliff said.

Lake County News will post additional information as it becomes available.

Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. .