May be ya cover up, at first they said 5 killed n then they didn't even apologize for spreading wrong info, which might be right actual info at dat time. Nepali govt is corrupted, they might be under pressure from Malaysian govt. they might thought we Nepalese will butn Malaysian embassy thats why they covered it up. 
Seems like Nepalese instigated it. I heard some Nepalsse got drunk n hit some old Malaysian dude. We Nepalese have attitude problem n we r egotistic. Aarkako desh ma kaam pani hamlai chaine, patta pani chaine ani [Disallowed String for - use not allowed] lafada garne. Nepal ma koi bideshile nepali mathi haat halosna k huncha? Ho thats what happened here I think. Aarkako desh ma gayera lagada garne ani kaha huncha.