After witnessing two men forcing a woman to the ground during the recent incident, the two unidentified men allegedly apprehended and detained the suspects until police arrived, according to Newcastle Advertiser.
The victim had allegedly been walking down Boundary Road with her mother, when the suspects approached them.
Police later arrested the two suspects believed to be 18 and 25 years old.
The suspects would remain in police custody while awaiting legal representation, before appearing in a Newcastle court.
In a separate incident, a 39-year-old man was sentenced to 20 years imprisonment for raping his 11-year-old granddaughter in the Emseleni area in KwaZulu-Natal.
Police spokesperson Captain Thulani Zwane said investigations by the Empangeni Family Violence, Child Protection and Sexual Offences Unit had resulted in the arrest of the accused in 2008.
“He was charged with rape and appeared in court several times until he was convicted last week,” said Zwane.
Provincial Commissioner Lieutenant General Mmamonnye Ngobeni welcomed the sentence handed down to the accused.
“The accused was expected to protect his granddaughter from criminal activities, but instead he raped her. His behaviour was not acceptable and he deserves to rot in jail,” said Ngobeni.