Phoenix police identified the suspect Sunday in a weekend stabbing at a bus stop that left the victim in critical condition.
The suspect, Louis York, 41, walked up to officers Saturday morning as they were setting up a perimeter in the area of 37th Avenue and Medlock.
Police said York made some comments that led them to believe he was the suspect, said Phoenix police Sgt. Tommy Thompson.
York was taken into custody without incident.
Thompson said the stabbing occurred shortly after 8:30 a.m. at the northbound bus stop north of Camelback Road on 35th Avenue.
Witnesses said York stabbed 30-year-old Matthew Jones for no known reason.
Jones was rushed to the hospital with a stab wound to the abdomen. He is not expected to survive, a court document stated.
The suspect fled the scene, but later approached officers.
There is no known motive other than the suspect indicated he may have mental problems, Thompson said.
Investigators from the Violent Crimes Bureau processed the scene and interviewed the witnesses and suspect.
York told officers he was recently released from a mental health hospital and, prior to his release, informed staff that he would kill someone once he was freed, according to court paperwork.
The suspect told detectives he obtained the knife that morning from a friend's house and kept it in his waistband for protection because people were following him.
York got on a bus at 15th Avenue and Camelback Road and saw the victim, whom he believed he had seen at a drug house two days before, the court document stated.
York and Jones got off the bus at 35th Avenue and Camelback Road and waited at the bus stop for a northbound bus.
While waiting, York said the victim looked at him and started to manipulate his waist while two other people appeared suspicious, police said.
York said he removed the knife from his waistband and stabbed the victim once, the court document said. York said the knife got stuck and he cut his hand on the blade.
According to court paperwork, York said he had been smoking and injecting crystal methamphetamine recently and was not taking his medication for paranoia.
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