LAPD detectives believe the suspects - one male and two females, all 18 to 25 years old - entered the house through an unlocked door, then ransacked it and took property.
Lohan's spokeswoman, Leslie Sloane-Zelnik, said the break-in happened Sunday while the actress and her younger sister were away. Sloane-Zelnik said many of Lohan's "personal belongings were taken without remorse."
Lohan posted on Twitter she didn't think it was a robbery because "things that a certain old friend knew meant a lot to me" were taken.
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