His cooperation led to the arrest of five others, including the Customs agent.
Specific charges included the murder of 148 people, torture of women and children and the illegal arrest of 399 others.
Immigration laws were cited in the arrests of three others, and a house in northwest London was also raided, the police said.
Twenty-nine defendants were arrested yesterday, and the arrests of two others are pending.
But today, General Hashem was accorded a public show of respect that has been mostly absent in the arrests of 39 others on the most wanted list.
Stotts turned on Daniel Spencer, and soon the two led to the arrest of Burr, Alsop, The Badgerow brothers, and many others.
His testimony against his partner reduced his sentence and reportedly resulted in the arrest of 21 others.
Kravitz disappeared from public view in 1937 after the arrest of Buchalter and 28 others on suspicion of importing narcotics.
These extraordinary 'patriotic education' sessions have already resulted in the death of one monk in unknown circumstances and the arrest of five others.
The arrest of Hu Jia, and many others, show that China is not taking up this opportunity as it should.