KIRK, Colo. (CBS4) – Family members of the two women killed on Colorado’s Eastern Plains on Monday have shared the identities of those victims with CBS4.

They say Dianne Kay Doddridge, 60, and Elva Doddridge, 88, were both killed at their home at 7328 County Rd P in the town of Kirk in Yuma County.

Authorities investigating the killing said earlier this week that Tyler Withrow, 30, a relative of both victims, was found at the home and was arrested. He is now charged with two counts of first degree murder.

The police response to the house came after a 911 call from the address, according to Yuma County Sheriff Chad Day.

“We got a 911 hangup call and it was essentially just a female saying this is my address I need the sheriff’s office now,” Day said.

Investigators so far have searched two places Withrow has lived or has family — his father’s townhome at 2500 South Victor Street in Aurora and another residence at 2855 Ironwood Circle in Erie.

Withrow was taken to the hospital for a mental evaluation a couple of weeks ago in Aurora after police responded to the Victor Street residence and allegedly found him naked and bleeding. Withrow allegedly had been breaking windows out of cars then using that glass to cut himself, leaving blood everywhere. He also allegedly trashed his townhome and set his kitchen on fire during the incident.

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Withrow was tentatively charged with second degree burglary, criminal mischief and resisting arrest after the Aurora incident.