Shirley Monge sentenced; 5 years in fatal stabbing of Ryan Sorenson

A Milwaukee County judge sentenced Shirley Monge on Monday, July 11 to five years prison and another five years of extended supervision in connection with the fatal stabbing of Ryan Sorenson in September 2019.

Monge pleaded guilty in May 2021 to a charge of felony murder. She was charged along with her husband, Angel Monge-Mathuzima in the Sorenson death. Monge-Mathuzima was sentenced last month to 16 years in prison and another nine years of extended supervision in this case. He was found guilty by a Milwaukee County jury in April.

Shirley Monge sentencing hearing

Case details

Just before 2 a.m. on September 15, 2019, Ryan Sorensen and two friends were walking near S. 71st Street and W. Becher Street when the married couple rode past on their bikes. Sorensen allegedly made a comment about wanting their bikes and that upset the woman, according to the complaint.

Ryan Sorensen

Monge allegedly circled back around Sorensen and "angrily spoke" to the group, the complaint said.

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According to a member of the group, Monge got close to Sorensen and was either pushed off her bike or she ran into him and fell off. Sorensen allegedly knocked Monge's phone out of her hand and that is when she started swinging at the victim. The husband also joined in on the fight, the complaint said.

His two friends pulled the couple off Sorensen and they allegedly fled on their bikes.

Surveillance footage of Monge and Monge-Mathuzima on bikes

Shortly after the couple fled, his friends noticed Sorensen had been stabbed in the chest. 

An investigation found blood in the street matched that of Monge-Mathuzima, according to the Combined DNA Index System. Billing records also showed he lived two blocks from where the incident occurred. 

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Monge was questioned by police and she admitted to being involved in the incident, saying an argument happened, she was pushed off her bike and Sorensen put her in a chokehold. She said that's when her husband intervened, according to the complaint.