A man with two others have been arrested for allegedly killing his wife -a 38-year-old school teacher- in northwest Delhi Bawana area, police said Thursday. The accused were identified as Manjeet (38), husband of the deceased, his girlfriend Angel Gupta alias Shashi Prabha (26) and Rajeev (40), they added. Manjeet was in a relationship with Angel and his wife Sunita, objected to it, so they conspired to eliminate her, Deputy Commissioner of Police (Rohini) Rajneesh Gupta said.