man was killed allegedly by his relatives who suspected he was responsible for the suicide of a person and also that his mother was practising black magic, police said on Wednesday. A mother-daughter duo has been arrested for the murder which was carried out with the help of their associate, they said. The victim, Arun Santosh Waghmare (35), a resident of Wathoda area here in Maharashtra, was found killed in the Tarodi Khurd locality on Sunday morning, they said.