In his 2008 interview with ABC, the technician also described graphic pictures he said he had taken of the bloody remains of executed prisoners dumped in the snow outside a university.
In his testimony this year, Sun confirmed that he took the pictures von Hagens provided to ABC News and that they showed executed prisoners but said he never went back to the university to pick up any bodies.
At the time of his interview with ABC News, Sun insisted his name not be used nor his face shown, saying he feared he could be sent to prison for his black-market body collection activities.
He now says he insisted on confidentiality because he worried about his future career.
Von Hagens himself has told ABC News that bodies of executed prisoners were in the past delivered to his operation in Dalian, China. He claims the bodies were cremated once he became aware they were those of prisoners, and that all of the bodies in his exhibitions are voluntarily donated.
The ABC News report concluded there was "no hard evidence" that any bodies of executed prisoners were actually included in the Premier Exhibitions display.
After the ABC News report aired, and a subsequent New York Attorney General's investigation, Premier Exhibitions agreed to issue a public statement saying its bodies include those received from the Chinese Bureau of Police.
"The Chinese Bureau of Police may receive bodies from Chinese prisons. Premier cannot independently verify that the human remains you are viewing are not those of persons who were incarcerated in Chinese prisons," the statement reads.
Referring to body parts, organs and fetuses that are also on display, the statement says, "Premier relies solely on the representations of its Chinese partners and cannot independently verify that they do not belong to persons executed while incarcerated in Chinese prisons."
In addition to his claim that he lied to ABC News, Sun also testified he was ordered by von Hagens in 2005 to concoct phony petitions and letters of protest that were sent to officials in Florida concerning a Premier body exhibition that was scheduled to open there. The lawsuit claims these "forged" papers were "intended to stop [the exhibition] from opening."
Von Hagens declined to comment on these allegations.