A judge on Tuesday ordered a competency evaluation for an unemployed doctor charged with killing a Yale University physician he once worked with.

The defendant, Lishan Wang, opposed the evaluation and also indicated that he wished to act as his own attorney in the murder case.

Wang, who recently lived in Marietta, Ga., is accused of shooting Vajinder Toor on April 26 outside Toor's home in Branford. Police say he also fired at Toor's pregnant wife but missed.

Workplace confrontations with Toor and others at Kingsbrook Jewish Medical Center in New York led to Wang's dismissal two years ago.

Superior Court Judge Roland Fasano ordered a competency evaluation to determine if Wang understands the legal proceedings and can assist in his own defense.

Wang's public defenders requested the evaluation, but would not say why. They also would not say why Wang wanted to represent himself.

Wang is due back in court on Sept. 27.