He reportedly did not suffer any major illnesses in the past.
Investigations into the incident are still ongoing.
An overview of Singapore's Prime Ministers so far – Lee Kuan Yew, Goh Chok Tong, and Lee Hsien Loong.
The corpse showed signs that the man had died at least two hours before the incident.
They were both wearing similar-looking pink collars, sparking suspicion.
It is unclear if the rider sustained any injuries.
Glasses were also raised as a toast to the Prime Minister.
Construction works will begin later this year.
It also won other awards such as Best Airport in Asia.
The last time anyone has seen the cat was on 8 April at around 6am.