Man murdered over protesting against eve-teasing of his daughter

In a shocking incident of Delhi's Motinagar, a man was murdered as he tried to oppose against eve-teasing of his daughter. The girl's brother was attacked brutally as well and hence has been admitted to hospital. Men who tried to save the girl revealed how nobody came to help the victims. The police have arrested four including two minors.
As per reports, mother of the culprits had given knife to them