A 25-year-old BJP worker was stabbed to death in Delhi on Wednesday night after an argument at a birthday party. The family of Rohit Sharma, also known as Rinku Sharma, has alleged a communal motive to his murder, but the police deny it, saying that it is inquiring into all angles. Five accused, Nashruddin, Islam, Mehtab, Jahid and Tajuddin, were arrested on Thursday and charged with murder, the police said.