The crane (Green and White parts) toppled over; At the very right hand side, Civil Defence rescue team were trying (to pull the bodies out?) 
The only one bus stop of School Of Business
The crane (red parts behind the 3 stripes) hurt the tree badly!
Reporters are asking our Campus Security Guards questions.Channel NewsAsia
SINGAPORE: Three workers were killed when a crane collapsed on them at a construction site at the National University of Singapore (NUS) on Friday afternoon.
The 60—metre crane toppled over at 2.15pm, crashing into a bus stop and several motorcycles that were parked nearby.
By the time the Civil Defence rescue team arrived, three workers had died. One of them, a Chinese national, was found beside the wreckage. The other two were crushed underneath.
One of the trapped men was a 47—year—old Singaporean crane operator and the other was an Indian national.
It took rescue officers 45 minutes to extricate them a job made difficult by the tangle of steel bars protruding from the ground.
Two other workers with minor abrasions were rushed to the nearby National University Hospital.
The Manpower Ministry (MOM) said the main contractor, Kimly Construction, has not had any fatal accidents over the last two years.
Work on the NUS Alumni Complex is scheduled to be completed this April, but MOM has ordered a full stop work order while investigations are being carried out.
I heard of a great bang and thought that there was a cleaner's pushcart toppled over out of the classroom. I never expect a life-taking accident happened in my campus. This is the 2nd time I heard of campus fatal accident. The first one is in SP while I was a year2 student; a junior fell off the Engineering building accidentally. This time, it is worsen, 3 lives were taken.
Amitabha