A judge has ruled that a Milwaukee man is incompetent to stand trial in the shooting deaths last month of three of his neighbors.

Judge J.D. Watts ruled Wednesday after a mental health report found 39-year-old Dan Popp did not have the ability to understand the charges and help in his defense.

Popp is charged with three counts of first-degree intentional homicide in the March 6 deaths of 40-year-old Jesus Manso-Perez, 36-year-old Phia Vue and 32-year-old Mai Vue. He's also charged with attempted first-degree intentional homicide for allegedly shooting at Manso-Perez's 18-year-old son.

The Milwaukee Journal Sentinel (http://bit.ly/1Mf8AGG ) reports Popp was ordered committed to a state mental health facility for up to one year but will be periodically reviewed to determine whether treatment has made him competent for trial.

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Information from: Milwaukee Journal Sentinel, http://www.jsonline.com