KEY POINTS:
Two New Zealand men remained on the roof of Sydney's Villawood Detention Centre last night.
The pair, Montana Kelly, 27, and his cousin Bruce Ngaromoa, 32, climbed on to the roof on Monday night with a Vietnamese man, Van Nguyn, 30.
Their protest was sparked by the cancellation of inmates' visits to family outside the centre. The men are also demanding improved health care at the centre.
The detainees' visas have been cancelled on character grounds after they served long jail sentences.
