Some users here is out of mind. Even if he have kill mamasan of some bar that not make reason to beat him to hospital. In every similar topic same persons writing comments at probably have do something more wrong and that's why security guys have beaten them. But there is no any kind of reason ever beat people to hospital if you are working security. (Not in other cases also reason beat anyone)
Even if someone kill someone foreigner or Thai in soi 6 or anywhere, that security people work is control situation until police will arrive and then after that killer get justice but country like Thailand can be at even in police station that killer get wrong kind of justice but there not helping if security guys beat him hospital condition, girls cut balls away and mix with vodka before ambulance arrive and nurse in hospital poisoning with rat poison before monks dump body what is left for street dogs.