POLICE yesterday detained a 27-year-old man in connection with two sexual assaults in Tuen Mun last week - but they have ruled out any link between him and the rape and murder of 19-year-old Ip Wing-sze.
At the same time, residents of the beleaguered Yau Oi estate, where one of the attacks took place, have decided to set up vigilante groups to protect women from further assaults.