Pittsburgh police say they've become more concerned about a 16-year-old girl last seen on Saturday now that someone has changed her Facebook status to "R.I.P" -- or "rest in peace."

Police say Diamond Wall was last seen leaving her residence about 10 a.m. Saturday in Pittsburgh's East Hills, an area with a large amount of drug-related and violent crime.

Police say her Facebook status was changed Sunday night, though investigators haven't said whether they know who did that.