They also abandoned the idea of wearing the uniforms. The murders At about 1:30 am on 25 April 1978, the three men left the coffee shop and Ching Boon went home to change and collect the traveling bag. Dressed in a red T-shirt, he tucked the icepick into his dark blue pants. Chin Hock was dressed in a white long sleeved top and dark blue pants, while Hwee Kuan was in a beige long sleeve top and blue jeans. The trio waited along Kallang Bahru near Block 66 for a taxi. Soon, a Yellow Top taxi stopped for them, driven by Chew Theng Hin, aged 60. Ching Boon got into the front seat and instructed the driver to go to the PRU base. Hwee Kuan sat behind the driver, and Chin Hock behind Ching Boon. The taxi proceeded via Bendemeer Road, Whampoa East Road, Serangoon Road and Upper Aljunied Road. Chew was instructed to stop the taxi near the rear gate of the PRU base at a dark and secluded stretch of the road. Suddenly, Hwee Kuan restrained Chew from behind and placed a knife to his neck. Ching Boon stuffed a cloth into his mouth and warned him not to make any noise while brandishing the icepick. He tied the driver with the nylon ropes and ordered him out of the taxi, when Chew suddenly attempted to break free from the aggressors. He was quickly subdued by Ching Boon and Chin Hock while Hwee Kuan stabbed Chew in the stomach. Ching Boon and Hwee Kuan pulled the driver out of the taxi and dumped him in a roadside drain as Chin Hock got into the driver's seat and prepared to move off. Just then, they spotted Chew attempting to climb out of the drain. Ching Boon and Hwee Kuan stabbed the man in the neck with the icepick and knife respectively causing Chew to fall back into the drain. When they returned to the car, Chew was spotted again trying to climb out leading to a third round of stabbings. Chin Hock drove the taxi towards the main gate of the PRU base. In the early morning of 25 April 1978, Lee, who was on sentry duty for the first time, took over the hourly sentry duty from fellow officer Koh Kah Kway at 2:00 am. He was issued with his service revolver, a .38 Webley & Scott, and