Information is sparse to say the least
See this tweet which has subsequently been reported by the likes of ICBC
We have confirmation that a 49 year-old Singaporean Malay man was executed today, 26 July, at Changi Prison. He has lived in prison since 2015, after being convicted of trafficking in cannabis (marijuana). He was sentenced to the mandatory death penalty.
— Kokila Annamalai (@Kokilaparvathi) July 26, 2022
Here’s the ICBC take