MODESTO (CBS13) — Mexican national Gustavo Perez Arriaga was back in court in Modesto today. Perez Arriaga is charged in the Dec. 26 shooting death of Newman Police Cpl. Ronil Singh during a traffic stop.

Gustavo Perez Arriaga
(source: Stanislaus County Sheriff)

Perez Arriaga’s attorney questioned his client’s mental competency, prompting a mental health evaluation.

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That evaluation is complete and under seal. The judge in the case is giving attorneys on both sides until the end of March to file any motions.

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Perez Arriaga’s next court date is set for April 8.