Even the "fairer sex" was not left out. All-women gangs, like the Ang Hor Tiap (or Red Butterfly Gang), were very common during the '60s and the '70s.
"They consisted mainly of cabaret girls, bar girls and hostesses," said Mr Singh. "Usually girls who were jilted by their lovers or who had had some unpleasant experiences with men. They were very mischievous and wild."
Mr Singh said that the women gangs were frequently involved in fights, but they usually did not engage in robberies or housebreaking.
These gangs gave protection to girls working in night-clubs and bars. Their favourite haunts were places like Clifford Pier, Eu Tong Sen Road, Jalan Besar, Tanjong Katong, Geylang and the Capitol Theatre vicinity