A man in his 30s has died in custody after "becoming unwell" on Sunday morning, Wiltshire police have said. 

The man had been held in custody at Gablecross Police Station in Swindon since Saturday morning, but died at about 9am on Sunday.

The incident is now being investigated by the Independent Office of Police Conduct (IOPC).

Superintendent Steve Cox said: "The man, who had been held in custody since Saturday morning, became unwell this morning and was sadly declared deceased at around 9am.

"As a result, we have made a mandatory referral to the Independent Office of Police Conduct (IOPC) who are now independently investigating.

"It would not be appropriate to comment further at this time."

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