The Japanese decided to forbid Christian worship and all types of religious gatherings, public and private. Subsequently, the repression became more violent. Peter was arrested in April or May 1945. He was held in a concentration camp which had been set up in a cave. A prison mate said: "He was often visited in prison by his aged mother and his wife, who brought him food every day. At one of their last visits, To Rot said to his mother: the police have told me that the Japanese doctor will be coming to give me some medicine. I suspect that this is a trick. I am really not ill at all and I cannot think what all this means".
Despite the precautions of the Japanese, Arap To Binabak, a prisoner, could see the brightly lit room where Peter had been summoned after the doctor arrived. The doctor gave Peter an injection, then something to drink and finally stuffed his ears and nose with cotton wool.
Then the doctor and two police officers made him lie down. Peter was stricken with convulsions. The "doctor" covered his mouth and kept it closed. The convulsions continued for a time, while the doctor held him still. Peter fell into unconsciousness and after a long while drew his last breath. The same eye witness gently spread the terrible news of Peter's death to his companions. Several prisoners, taking advantage of the night-time absence of the Japanese, wanted to see his body. Thus they verified his horrible death.
This information came from this internet site.