The man was arrested at the scene, the police said in a media release, adding that preliminary investigations showed both parties are known to each other.
Neighbours said that the man was often heard arguing with the woman and had been locked out of the house on multiple occasions.
When CNA arrived at the scene at 1.05pm on Friday, a yellow slip of paper was perched on a window grille at the unit, stating that it had been locked by the police for investigations.
The man will be charged with murder on Saturday. The offence carries the death penalty.
Police investigations are ongoing.
