Fifty three-year-old software engineer Imad Basha has been arrested for allegedly poisoning his 45-year-old relative Uzma Khan in Bengaluru, police said. Imad and Uzma were having an affair and after their marriage plans didn't materialise, Uzma decided to marry another man. Imad drank non-lethal toilet cleaner after killing Uzma, to make it look like a suicide pact.