DEARBORN, Mich. -

Dearborn's police chief says a "domestic violence incident that escalated" apparently led a 23-year-old man to stab and kill his 30-year-old sister in the Detroit suburb.

Haron R. Elmawri was arraigned Monday on first-degree murder and torture charges in the death Saturday of Asyh Elmawri. District Judge Sam Salamey ordered him jailed on a $1 million bond and scheduled a probable cause hearing Aug. 8.

The court says Haron Elmawri is awaiting appointment of a defense lawyer.

The Wayne County Medical Examiner's Office says Asyh Elmawri died from a combination of strangulation and multiple stab wounds.

Police Chief Ronald Haddad hasn't disclosed a motive for the killing and says facts around it remain under investigation. He says his department's "hearts go out to the family of the victim."