POLICE have launched an appeal about a 22-year-old woman who went missing after visiting a Swindon nightclub over the weekend.

Sian O'Callaghan was last seen leaving Suju nightclub in Old Town in the early hours of Saturday morning.

However, no-one has seen or heard from her since since leaving the nightclub in the High Street at 2.50am.

Wiltshire Police say they are concerned over the safety and welfare of Sian.

She is described as white, 5ft 3in tall, of medium build with brown, straight hair and green eyes.

When last seen she was wearing a grey dress, black bolero style jacket, dark coloured tights and flat boots. She was carrying a dark handbag which had a beige flower attached.

Chief Inspector Mike Jones said: “For Sian not to return home after a night out and not make any contact with family or friends is not only unusual, but it is something that she has never done before.

"Sian doesn't appear to have any reason in her personal life that would indicate that she might want to leave the area.

"She is normally an avid Facebook user but has not used her account since earlier in the day on Friday."

Chief Inspector Jones said that a number of officers were involved in the search for Sian and their enquiries were on-going.

He added: "Sian's family are extremely worried about her and we are offering them our full support.

"Members of the community are likely to notice increased police presence in Swindon as officers conduct their enquiries and specialist teams carry out searches.

"I'd like to reassure the public that we are conducting a thorough investigation into Sian's disappearance and that we have a team of highly-trained officers working on the enquiry.

"It is very important that anyone who knows of Sian's whereabouts or of any reason for her to stay away contacts us immediately.

"I would also like to take this opportunity to appeal directly to Sian and ask her to make contact with her family or police to let us know that she is okay."

Anyone with information should contact Wiltshire Police on 0845 408 7000 or Crimestoppers on 0800 555 111 where information may be left anonymously if preferred.