Man Allegedly Killed Girlfriend and Wounded Victim's Teenage Daughter Before Shooting Himself: Police

Sommer Kelly, 40, was allegedly shot by Clint Edward Griffith, 51, who later shot himself in the head while carjacking a vehicle, say police

• Police allege Clint Edward Griffith fatally shot Sommer Kelly on Jan. 30

• Kelly's sister wrote on a GoFundMe page that the victim's daughter was shot while "trying to interfere and help her mom"

• Griffith is currently under police surveillance in the hospital after shooting himself

A man authorities suspect killed his girlfriend and shot her teenage daughter is in critical condition after allegedly shooting himself in the head while carjacking a vehicle days later, police say.

Authorities responded to an Apple Valley, Calif., home on Jan. 30 regarding a shooting and found Sommer Kelly, 40, with multiple gunshot wounds, the San Bernardino County Sheriff’s Department said in a statement. She was declared dead at the scene.

Police also found the woman’s 18-year-old daughter with multiple gunshot wounds and transported her to a hospital, per the statement.

During their investigation, authorities identified Clint Edward Griffith, 51, as the suspect and alleged he had fled the scene, the statement said. They issued an arrest warrant for him.

Griffith was Kelly's boyfriend, a spokesperson from the sheriff's department tells PEOPLE, adding that authorities have "overwhelming evidence" that he is the suspect.

In an updated statement, the sheriff’s office said on Feb. 4, they learned Griffith was a suspect in a carjacking incident in Barstow, Calif., during which he shot himself in the head. He remains hospitalized in critical condition, authorities said.

In a GoFundMe set up for the victims, Brandy Tarin, who identified herself as Kelly's sister, said Kelly's teenage daughter was allegedly shot three times while “trying to interfere and help her mom.” She said three of Kelly's four children were in the house and witnessed the shooting.

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Police declined to comment on these alleged details to PEOPLE, citing the ongoing investigation.

“These poor babies did not deserve this! My beautiful sister did NOT deserve this!! Our family is forever broken,” Tarin wrote in the fundraiser.

Police are expected to take Griffith into custody once he is released from the hospital, the sheriff's department tells PEOPLE, adding that he is currently under surveillance by deputies.

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