High school health teacher accused of shooting, killing ex-husband’s girlfriend

Local News

MIDVALE, Utah (ABC4 News) – A high school teacher is accused of killing shooting her ex-husband’s girlfriend.

According to Unified Police, the shooting happened at 7690 South Center Square just before 7:00 p.m. Sunday.

According to police records the suspect, 32-year-old Chelsea Cook, was dropping off cough medicine for her children at her ex-husband’s apartment. While the ex-husband was outside, Cook entered into his apartment where her two three-year-old twins were at.

Cook was asked to leave but she refused. She locked herself inside the bathroom and called 911.

While cook was on the phone with 911, she came out of the bathroom, grabbed her coat and “suddenly pulled out a handgun and fired three to five rounds at the victim,” arrest documents state.

A witness was able to get the gun away from Cook. The witness said she then walked over to her children and sat on the recliner chair while the witness tried to help the victim. When Cook stood up and tried to walk back to her coat, the witness then grabbed her and pinned her up against the wall until officers arrived. 

The victim was taken to the hospital where she died. She was later identified as 26-year-old Lisa Williams. 

According to arresting documents, her twins witnessed the shooting. Cook invoked her right to a lawyer and would not discuss anything with law enforcement. 

She was booked into the Salt Lake County Jail on first-degree felony aggravated murder. 

According to the Alpine School District website, Cook was a Health teacher at Skyridge High School in Lehi. 

In a statement sent to parents the school district said they had learned of the incident Monday morning. 

“This morning we learned about a situation involving one of our Skyridge teachers, Ms. Cook. She was arrested and charged with a serious crime. We know there will be information in the media regarding this incident. We want you to be aware of what we have learned, so we can help you process and provide support to any of you who may be in need.

This type of news is hard to comprehend and we want you to know that teachers, counselors and your parents can help provide support in this difficult time.

As you leave school, you may see news media presence set up outside. We encourage you not to engage with reporters who may want to talk with you regarding this heartbreaking incident. District officials will be at the school answering media questions. If you are approached, we recommend that you direct any media requests for interviews to school administration or Alpine School District officials.

If you need help, we are here for you. Please let your teacher know and they will have someone escort you down to the counseling center.

We are a family and we care deeply about each of you. Please do not hesitate to ask for help if you need it.”

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