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Police investigating the disappearance of a woman after she left a Swindon nightclub believe they are "very close" to identifying her whereabouts.
Sian O'Callaghan, 22, went missing on Saturday after failing to return home.
Det Supt Steve Fulcher said the search had made "good progress" but would be limited to daylight hours and would be assisted by dog teams on Thursday.
"I believe we are getting very close to identifying Sian's whereabouts," he said.
He added he was not asking for any more public assistance at this stage.
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