[2] A majority of her followers were female, both young and old with legal cover occupations and throughout these activities, she helped any pregnant wives of high ranking communists in Perak by sheltering them in the houses of selected relatives.
[2] Throughout the Malayan Emergency, she controlled many of the major armed units in the town area, including the notorious Kepayang Gang along with Special Mobile Squad (SMS) that were reported as being responsible for many of the assassinations and grenade attacks that were carried out between 1948 until 1951.
[4] Irene Lee, whose husband, Detective Corporal Jimmy Loke, was assassinated by communist guerrillas in Penang in April 1951, decided to join the Malayan police force where she was promoted to Detective-Inspector, and was subsequently posted to Special Branch headquarters in Kuala Lumpur.
[4] The woman's husband was responsible for the killings of pineapple and rubber merchant Lim Teck Kin and several others including a policeman, a factory supervisor and a manager at Hock Lee Bus Company in Singapore.
Once the identity of Ah Shu was identified, Irene was sent by her department into Singapore in February 1952 to track the woman and follow a trail that would ultimately lead to Lee's arrest and her eventual banishment to Mainland China.