He attacked a neighbor (intending to rape her) passing by his house on June 4,2001. He was chased and found in a nearby restroom - his capture led to his confession to the murder of a woman left for dead in Rock Creek Park the previous January.
He was charged June 5 with the murder and arraigned the next day.
Here are some links to articles about his crimes and capture and arrest.
Fox News just reported that they released the sketch of the ring in the hopes that a pawn shop owner might recognize it if in fact it were stolen and later sold.
It sounds like her ring, bracelet, watch and keys are missing. We don't know about the necklace.
It also sounds like if this is the guy, (Cook), he'll probably fess up pretty easily. He didn't appear to put up much resistance to talking in this case. All the more reason for the police NOT to divulge too much of what was found at the scene. It makes me mad now that the press reported that the clothesline was found and that her leggings were knotted. If this guy did confess and that info wasn't public and he said he used his hands, or whatever, they'd know he was probably lying. But now, he could confess and use info that was made public.