A 29-year-old man was charged on May 6 with voluntarily causing grievous hurt to his 19-year-old sister, who died.
Huang Bocan is accused of hitting Huang Baoying with a wooden pole on Tuesday, May 4 at about 11pm at Block 602 Clementi West Street 1, CNA reported.
The police were alerted on Wednesday, May 5 at about 6.30am to a case of unnatural death at a residential unit.
The woman was already lying motionless in the unit when officers arrived.
Huang is currently remanded, according to CNA.
He has been issued with a five-day medical certificate.
The judge ordered for Huang to be taken out for investigations with permission when he is remanded this week.
If convicted of voluntarily causing grievous hurt, he can be jailed up to 10 years and fined or caned.
Chinese media reports on incident
According to Chinese media 8 World News, a neighbour, who is living in the same level on the same block, said that she saw the pair of siblings for the first time last week.
That was also the last time she saw them.
It is believed that they are tenants in the unit.
The neighbour said that she used to interact with the flat owner's mother when she was still alive, but did not keep in touch with the owner after the elderly woman passed on.
Another resident, a 79-year-old man, added that the flat owner does not interact with others, and is rarely seen.
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