On my earlier posting, I mention that the prey was probably Eurasian Tree Sparrow.
I think it a Flowerpecker - Scarlet-backed Flowerpecker (Dicaeum cruentatum).
I posted the picture at PhotoMalaysia forum and the reply from jytou here.
Is was not sparrow, "look at the feet, they are slim black feetmaybe a juvenile munia, sunbird or flowerpecker, that has such slim legs."
This is the heavy cropped / closeup of the prey. We can see the red colour at the head, or maybe a bleeding/brain haemorrhage!
The earlier picture before the Falconet catch the Flowerpecker.
It perched just above the Falconet.