San Dimas woman arrested in mother-in-law’s slaying

DIAMOND BAR >> Sheriff’s officials Thursday announced the arrest of a 42-year-old San Dimas woman who was found driving in Orange County with the remains of her slain mother-in-law in an SUV Wednesday following a fire at the mother-in-law’s Diamond Bar home.
Unyoung Lee had been a “person of interest” in the investigation ever since she was found driving in Tustin early Wednesday morning, Los Angeles County sheriff’s officials said.
After a day of questioning, detectives arrested Lee about 9 p.m. Wednesday, according to Los Angeles County booking records. She was booked on suspicion of murder and was being held in lieu of $500,000 bail pending her arraignment, scheduled Friday in Pomona Superior Court.
Orange county coroner’s officials withheld the identity of Lee’s alleged victim and 77-year-old mother-in-law.
A large fire that broke out shortly after 1 a.m. Wednesday at the victim’s house in the 1200 block of N. Diamond Bar Boulevard first drew emergency personnel to the home, according to deputy Juanita Navarro-Suarez of the Los Angeles County Sheriff’s Homicide Bureau.
Firefighters found no one inside the home.
But Tustin police soon received a tip that the resident of the home had been killed, the house had been set on fire intentionally, and the possible killer was driving in the Tustin area with the victim’s remains in the car.
Tustin police quickly found the car and detained Lee as detectives continued their investigation both in Tustin and in Diamond Bar.
A motive in the slaying has not been released.

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  • kymykat

    wow sounds like a set up to me. If it weren’t for the tip off of the woman driving around in SUV with dead mother n law in the vehicle. maybe the woman had no idea the boy was in back of suv? Maybe the killer set fire to the house and then saw the suv taking off with the body in it and figured it was a way out of being a suspect. Pretty tricky if that’s the case. I don’t look in the back of my SUV when taking off to go somewhere. I guess I need o from now on. Let’s assume driver didn’t know the house was on fire. Maybe it a big house. But we all know the DA is quick to wrap up such cases. and it took several hours before woman arrested when questioned.Why is that? wouldn’t it be obvious she the killer right away by her bloody clothes??????? if no blood then still a woman dragging another dead womans body and lifting it into an SUV? not without help.

    • kymykat

      How come no one but myself thought anything odd about this situation & commented? I guess I need to look up the outcome of this case. Why wasn’t the tipster questioned for several hours, they sure seemed to know more than the driver