A 22-year-old man was arrested on Tuesday for allegedly killing his wife in Sakinaka area of Mumbai after police found blood stains on his nails and began probing his involvement, an official said.

Accused Manoj Prajapati and his wife Reema Bhola Yadav were living separately over the past two days in Khairani Road locality and a friend of the latter found her dead in a pool of blood when he reached her house this morning, the official said.