On 2 September 2007, 20-year-old
Corporal Dave Teo Ming of the 1st Singapore Infantry Regiment of the
Singapore Armed Forces went missing from
Mandai Hill Camp. His disappearance was only noticed at 11.59 pm, and it was also discovered by the army personnel that Teo's rifle and five bullets, which were issued to him for guard duty, were also missing. As a result, the
military police were alerted to Teo's desertion and they conducted a search within the camp premises. After the search failed to locate Teo, the
Singapore Police Force took over the case and thus initiated an island-wide manhunt, and over 200 police officers participated in the manhunt to capture Teo, although this operation was conducted in secrecy and away from the public eye. About 20 hours later, at about 8pm on 3 September 2007, Teo was finally arrested at a shopping mall near
Orchard Road; the police discovered him at a toilet in the mall's third floor, just when Teo managed to load the rifle. The police managed to recover the rifle and five bullets; they also recovered three more live rounds of ammunition which Teo stole from the camp back in August 2007 during a
live-firing exercise. A 40-cm long knife was also recovered in Teo's possession. Based on first-hand investigations, the police managed to uncover that while on the run, Teo and a friend had stayed at a
Geylang hotel and asked for a Thai prostitute. The same friend was also arrested on suspicion of having accompanied and abetted Teo during his desertion. The police announced to the public regarding the incident, and they admitted that this manhunt was not publicized out of consideration for the operation to be carried out safely and successfully, and for fear that it may only provoke the suspect into resorting to worse measures. The
Ministry of Defence (MINDEF) also stated in a media statement that MINDEF and the
Singapore Armed Forces (SAF) would cooperate with the police in investigating the case. In response to the arrest of Dave Teo, his 70-year-old grandmother Tan Ah Hoon, who was his primary caregiver after his parents' divorce, was in a state of anguish over her grandson's actions, especially since she already lost one of her grandsons (Teo's younger brother) to a car accident in 2001. Tan died from
liver cancer in late 2007 while Teo was still in remand awaiting trial for the AWOL incident he perpetuated. The public was also shocked at the desertion, and it was also speculated that Teo had gone AWOL due to a failed relationship, although a source revealed that Teo, who was originally supposed to end his
National Service (NS) in October 2007, had performed well in his NS duties. Teo's army partner and superior also noted that Teo did not show any unusual behaviour during his time at the army camp, although the superior recalled that Teo was stressed about issues related to his ex-girlfriend. The AWOL case of Dave Teo was the first time in 23 years where a National Serviceman had
gone AWOL with a rifle and ammunition. The last such case happened on 6 August 1984, when 18-year-old Teo Yong Kuan, who came from the 30th Singapore Combat Engineering Battalion, was charged with stealing an
AR-15 rifle and 30 bullets from
Khatib Camp. Teo Yong Kuan, who admitted to all charges, was sentenced to five years' imprisonment and
12 strokes of the cane on 12 May 1986. ==Criminal charges of Ong and Teo==