Winchester Library Stabbing 9-1-1 Calls Released

WINCHESTER, MA (WBZ-AM) -- Winchester Police and Middlesex District Attorney Marion Ryan released the 911 calls and radio transmissions  from fatal stabbing inside the Town's library on February 24.

Deane Kenny Stryker,22, an aspiring doctor was slashed by Jeffey Yao with a 10-inch hunting knife.

A 77-year old man was also stabbed in the attack as he intervened but is okay.

Jeffery Yao, 23, the man accused of the murder, was arrested and sent to a state maximum state maximum security psychiatric hospital after he was found too mentally ill for the county jail according to Middlesex County Jail officials.

The 9-1-1 Calls below are from library personnel on a landline inside the Library and from an individual on a cell phone inside. All reporting that for reports that Stryker and the another man had been stabbed.

Listen Below: 911 Call # 1 – Library personnel from landline in the Winchester Public Library

Listen Below: 911 Call # 2 – Library personnel from landline in the Winchester Public Library. Listener Discretion is Advised

Listen Below: 911 Call #3 To Winchester Police From Library. Listener Discretion is Advised

Listen Below: Radio Transmissions from Winchester Police. Listener Discretion is Advised

Police have also released a cache of  documents detailing their interactions with the murder suspect Jeffery Yao. 

RELATED: Read Documents Released by Winchester, MA Police Dept on Jeffery Yao

They say that they have had at least dozen interactions with him since 2012 including:

  • 2012: The Winchester Police Department‘s School Resource Officer is notified of concerning material that Yao has posted while a student at Winchester High School. This includes an incident that has been covered by the media this week regarding inappropriate social media posts. Winchester Police were advised by a mental health professional treating Yao, in writing, that he did not feel Yao was a threat to others and should be cleared to return to school.
  • March 2013: Winchester Police provide information to Yao’s father on the section 12 and warrant of apprehension process.
  • Nov. 13, 2013: Following a police investigation (case 271122) into Yao’s behavior, police escort Jeffery Yao, with his father, to the hospital for a mental health evaluation.
  • April 1, 2014: Yao reported to police that a man yelled at him while waiting in line at a local pharmacy.
  • April 14, 2014: Yao reported to police that his bicycle had been stolen from outside a local pharmacy.
  • May 20, 2014: Yao was ordered off the grounds of Winchester High School after he allegedly ran onto the field during a high school lacrosse game.
  • Feb. 24, 2016: A neighbor reported that Yao allegedly had an outburst and threw a shovel across the street, which bounced up and broke her window. The neighbor declined to file a police report, and the Yao family reportedly paid for the damages.
  • March 22, 2016: Yao called the Winchester Police Department from a hospital claiming that he kicked in the door of his family's home and should be arrested. This was later found to be untrue, and the Winchester Police Department followed up with hospital staff and the Yao family. The department's investigator asked that the Winchester Police Department be notified by the hospital when/if Yao was released.
  • Oct. 7, 2016: A healthcare worker reported to Winchester Police that Yao had made suicidal statements and they were concerned for his safety. An officer located Yao at the Winchester Public Library, and he was escorted by police to a local hospital for a mental health evaluation.
  • Dec. 7, 2016: Yao came to the Winchester Police Department in the evening and said that his doctor had been threatening him and that the doctor was telling Yao he was hearing voices inside his head. Winchester Police made several attempts to reach a doctor treating Yao that evening and three more attempts the next day before they reached the doctor and reported the situation to him. The doctor told police that he would see Yao within the week and would followup.
  • June 28, 2017: Winchester Police responded to a convenience store on Main Street for a report of a suspicious person. A customer told police that a man, later identified as Jeffery Yao, asked the customer to kill him. An officer later found Yao walking on Main Street, and Yao asked the officer to kill him. Police had Yao transported to the Hospital by ambulance for a mental health evaluation.
  • Sept. 9, 2017: Yao was arrested after a neighbor called the police department reporting that a man was attempting to break into their house. Yao was located in the area by Winchester police and arrested. After he was bailed police notified his mother that Jeffery Yao needed to go to the hospital for a mental health evaluation. Jeffery was escorted to the hospital by a police officer. He later appeared in court.
  • Feb. 7, 2018: Jeffery Yao was involved in a motor vehicle accident in Winchester. There was no personal injury. One vehicle was towed.

Chief Peter MacDonnell says his hope is to continue the dialogue about mental illness in our society.

Yao's lawyer says he's mentally ill.

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