executive director of the New Jersey Poison Information and Education System warned Somerset officials that at least four suspicious overdoses indicated the possibility that an employee was killing patients. The hospital delayed contacting authorities until October. By then, Cullen had killed at least five more patients and attempted to kill another. When a patient in Somerset died of low blood sugar in October 2003, the hospital alerted the New Jersey State Police. That patient was Cullen's final victim. State officials castigated the hospital for failing to report a nonfatal insulin overdose administered by Cullen in August. An investigation into his employment history revealed past suspicions about his involvement in patient deaths. Somerset fired Cullen on October 31, 2003, ostensibly for lying on his job application. The nurse Amy Loughren alerted the police after she had become alarmed about Cullen's records of accessing drugs and his links to patient deaths. Police kept him under surveillance for several weeks until they had finished their investigation. Investigators assigned Loughren to visit Cullen after work hours and to talk with him while she wore a wire. With that evidence, police had produced enough probable cause for arrest. Arrest and sentencing Cullen was arrested at a restaurant on December 12, 2003, and charged with one count of murder and one count of attempted murder. On December 14, he admitted to the homicide detectives Dan Baldwin and Tim Braun that he had murdered Fr. Florian Gall and had attempted to murder Jin Kyung Han, both of whom were patients at Somerset. In addition, Cullen told the detectives that he had murdered as many as 40 patients over his 16-year career. In April 2004, Cullen pleaded guilty before Judge Paul W. Armstrong in a New Jersey court to killing 13 patients and to attempting to kill two others by lethal injection while he was employed at Somerset. As part of his plea agreement, Cullen promised to cooperate with authorities if they did not seek the death penalty for his crimes. A month later, he pleaded guilty to the murder of three more patients in New Jersey. In November 2004, Cullen pleaded guilty in an Allentown court to killing six patients and trying to kill three others. He repeatedly interrupted the proceedings by taunting the judge with the chant, "Your Honor, you need to step down." Cullen was ordered to be restrained and gagged. On March 2, 2006,