text: A former doctor charged with killing a Yale University physician he once worked with has been found incompetent to stand trial for the second time. New Haven Superior Court Judge Thomas O'Keefe Jr. ruled Monday that 49-year-old Lishan Wang should be sent to Connecticut Valley Hospital for treatment. In a court report submitted last month, mental health experts said Wang displayed 'paranoid thinking' and was 'guarded and suspicious' when discussing a relationship with court-appointed lawyers. Lishan Wang was charged with murder in the shooting of Yale University doctor Vajinder Toor outside his home in April 2010 . He was originally ruled incompetent in 2010, but he was restored to competency after being treated at Connecticut Valley Hospital. A new evaluation was ruled after a public defender filed a motion asking for the court to terminate Wang's self-representation . The ruling came after two mental health experts testified that Wang is unable to rationally understand criminal proceedings or assist in his defense, according to The Hartford Courant. Wang, a father of three, is charged with murder in the shooting of Dr. Vajinder Toor, 34, and shooting but missing Toor's then-pregnant wife outside the couple's Branford, Connecticut, home in April 2010. Police say the shooting stemmed from a dispute the men had two years earlier while working together at a New York City hospital. Wang, who represented himself at the hearing, is due back in court on May 21. The report said that Wang would not be able to 'establish an effective relationship with a defense attorney or to organize himself in a manner that he could be meaningfully understood by others' in his current state. Wang and Toor worked together at Kingsbrook Jewish Medical Center in New York City, and Wang had a history of confronting Toor and other staff members before his dismissal in 2008. Toor (pictured) was shot outside of his Branford, Connecticut, home. After the shooting, Wang was found in his van with documents referring to his dismissal from Kingsbrook Medical Center in New York City, where it's believed he had confrontations with Toor . After the shooting, police found Wang in his van with documents referring to his dismissal and others involved. They also found a wig, hammer, knife and about a thousand rounds of ammunition. In 2010 Wang was originally ruled incompetent, but he was restored to competency after being treated at Connecticut Valley Hospital. When a second competency evaluation was ordered earlier this year after Chief Public Defender Thomas J. Ullmann filed a motion asking for the court to terminate Wang's self-representation. Ullmann said that Wang is mentally ill, which Wang countered by accusing the public defenders of working against him. 'This is much more complicated because of particular issues in this case that it's hard for me to figure out even where to start,' O'Keefe told The Hartford Courant. 'He chooses to represent himself, which he has a right to do, but it causes some problems on how to proceed.' Wang has asked to represent himself in his trial and accused the public defender's office of working against him . While representing himself, Wang will have an opportunity to cross-examine witnesses, call witnesses, make his own statements and testify on his own behalf. Though Wang did not testify at Monday's hearing, he referred to a rebuttal of the competency report in which he quoted Dostoyevsky, Socrates, Richard Nixon, Abraham Lincoln and alleged Boston Marathon bomber Dzhokhar Tsarnaev, as well as recounts two parables. Wang said that the experts misinterpreted his answers, misquoted him and lacked knowledge about his 'cultural background'. One of the experts from the competency report, Madelon Baranoski, said that Wang lost his 'path of rational thinking' during the evaluation and that he suffers from 'a very serious mental illness'. She added that his distrust of the public defender's office was 'reaching psychotic proportions'. 'It is our opinion that you need treatment,' she said. Police investigate the murder scene of Yale University doctor Vajinder Toor in Branford, Connecticut, Monday, April 26, 2010 .
target: Lishan Wang was charged with murder in the shooting of Dr. Vajinder Toor outside his home in April 2010 .
  In 2010 Wang was originally ruled incompetent, but he was restored to competency after being treated at Connecticut Valley Hospital .
  A second evaluation was ordered earlier this year after the public defender's office asked the court to terminate Wang's self-representation .
  Mental health experts said Wang displayed 'paranoid thinking'
  They said he was 'guarded and suspicious' when discussing a relationship with court-appointed lawyers .
  Wang, who represented himself at the hearing, is due back in court in May .