A neighbour, who declined to be named, told 8world the deceased was an intellectually disabled 34-year-old who originally lived with his aunt.
His aunt's brother, who is in his 50s, allegedly took over his care recently.
The neighbour, who said he grew up with the deceased, claimed the latter had told him on Thursday that he was facing some family issues and felt pressured as he was being bullied at home.
"He previously told me that his aunt's brother borrowed money from him," said the neighbour, who added that both men were unemployed.
What a messed up, totally dysfunctional family. Then again, it's Yishun. Anyway, RIP to the intellectually disabled victim.