
The man was identified as Kayama Kenichi, the general manager of AIRI Co Ltd.
Pol Lt Prathinwit Senapeng of Huay Kwang police station said the Japanese man was pronounced dead at Rama 9 Hospital after he was rushed there by security officers of the shopping mall.
Security officers said the man was seen sitting on the guardrail of the car park at 9 pm before he fell down to the ground behind the shopping mall.