A man has been arrested in connection with Sian O’Callaghan’s disappearance as police say they still have hope that the missing woman is alive.

According to police on the O’Callaghan case, a man in now in custody on suspicion of kidnapping.

Today, sniffer dogs were brought in to help find the 22-year-old office worker who went missing in the early hours of Saturday morning.

A £40,000 cash reward has been offered to anyone who can offer information leading directly to O’Callaghan being found.

In a latest development, police were today appealing for anyone who has seen a green Toyota Avensis estate car with taxi markings to come forward.

Sian O’Callaghan was last seen leaving a Swindon nightclub alone early on Saturday morning. Her boyfriend and family have spoken out appealing for information on her whereabouts.

A poster asking for information about Sian O'Callaghan's disappearance.
A poster asking for information about Sian O’Callaghan’s disappearance.

In other leads, a text message sent to O’Callaghan’s by her boyfriend, Kevin Reape, was picked up by a mast in the 4,500 acre Savernake Forest near Marlborough, helping police to narrow down their search.

According to officers on the case, the investigation is progressing “at a rapid pace” and today’s arrest is a leap forward.

Detective Superintendent Steve Fulcher said: “We have made good progress in narrowing the search using a number of technologies and techniques and I believe we are getting very close to identifying Sian’s whereabouts.”

O’Callaghan’s family have also spoken for the first time since her disappearance, and thanked the public for its support.

“We are aware of the reward that has been offered and are very grateful. We hope that this might help someone come forward with information to help the police find her.

“This is an extremely difficult time for us and we continue to hope and pray that our beautiful girl is found soon.”