Choi Yong-hwa, 28, described how she was made to accompany a heavily pregnant woman, who had been returned to North Korea across the bridge from China, to a clinic where doctors induced labor. After the infant was born, Ms Choi said she and other women stood by in disbelief as it was suffocated with a wet towel. The mother passed out.
A 66-year-old grandmother also testified to witnessing the deaths of babies at Sinuiju, two of them healthy boys born at full term. The first belonged to a 28-year-old woman called Lim. The witness was holding the newborn in a blanket when a guard grabbed him by a leg and threw him into a large box lined with plastic.
A total of seven babies - five born prematurely after labour was induced - were left to die in the box. Two days later the premature babies were dead. The two full-term boys were still blinking, although their lips had turned blue. A guard battered them to death with forceps, the witness said.
At the Nongpo centre in Chongjin, witnesses saw the so-called "children of betrayers" tossed into a wicker basket, covered in plastic sheeting and left to die.
One woman watched the killing of seven babies, taken from their mothers and left face-down on the ground within their view. After two days the guards smothered any that were still alive. "Guards would say the mothers had to see and hear their babies die because they were Chinese," the report said.