TUSTIN, California: Southern California authorities say they have found a suicide note on a computer belonging to a 20-year-old man accused of killing three people during a deadly rampage last month.

Orange County sheriff's investigators said in a news release Friday they discovered a document labeled "Suicide Note" on a computer removed from the bedroom of Ali Syed. They said the document was created Feb. 19, the same day Syed fatally shot a woman at his parents' house and then shot and killed two others before taking his own life.

Authorities say the note gives some indication that the killings were premeditated and planned.

They also said they haven't found any connection between Syed and his victims.