St. Louis Major Case Squad Investigations

MCS Report #193

Classification: Homicide

Requesting Agency: Charlack Police Department

Date of Activation: 02/16/1991

Commander and Department: Capt. Daniel Chapman, Dellwood PD

Deputy Report Officer and Department: Det. Sgt. Robert Lowery Jr, Florissant PD

Victim: Patricia Jean Mangles

Suspect: Steven M. Cavanaugh

The Charlack Police Department requested the assistance of the Major Case Squad in investigating the death of Patricia Mangles (age 46). At approximately 8:40pm, police officers responded to a residence in the 2700 block of Walton Road for a report of a possible disturbance after a neighbor heard a female voice screaming for help. There police officers located Patricia Mangles outside by the driveway. She had been repeatedly stabbed and was pronounced dead on scene.

As a result of this investigation, Steven Cavanaugh (age 17 - charged as an adult) was charged with Murder 1st Degree. His bond was set at $100,000.

"Squad Membership is Regarded Not Only as a Honor, but as an Opportunity. It is Police Work at its Purest."

- St. Louis Post-Dispatch Sunday, March 7, 1982

MAJOR CASE SQUAD OF GREATER ST. LOUIS
1700 N Hwy 67
Florissant, Missouri 63031
(314) 831-7000
ST. LOUIS REGIONAL CRIMESTOPPERS
1-866-371-TIPS (8477)Visit Site
The Major Case Squad of Greater St. Louis is a 501(c)(3) nonprofit organization supporting multi-agency homicide investigations across the St. Louis region.
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