The Rivers State Police Command on Thursday arrested members of a vigilante group known as Diobu OSPAC in Mile Three, Diobu area of Port Harcourt for sexually assaulting a 21-year-old woman.
They were also accused of unlawfully detaining some residents of the area they arrested.
The vigilante members were said to have detained the 21-year-woman and her two brothers identified as Jesse and David for several hours.
It was gathered that trouble started after the father of the victims reported a case of domestic disagreement to the vigilante group which led to the arrest and subsequent detention of the siblings by the vigilante group.
Narrating her ordeal, the 21-year-old woman said the vigilante members subjected her to severe torture during her detention and also inserted fingers in her private parts.