An Indian man was found carrying 12, 100 gram gold bars inside his body.

An Indian man suspected of smuggling gold in his rectum was arrested after customs officers at the airport in Hyderabad, India, saw him walking in a suspicious manner.

An x-ray revealed 12 gold bars had been inserted into his rectum before boarding, The Daily Mail reports.

Eight gold bars weighing a total of 800 grams were also found in his luggage hidden inside LED lights.

"A smuggler bringing gold pieces concealed in his rectum is often an expert. That's because not anyone can move with ease when gold pieces are in the rear," one customs officer said.

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The haul totalled 2kg of gold worth an estimated NZD$122,000.

The man arrived at Rajiv Gandhi airport in Hyderabad after a four-and-a-half hour flight from Singapore, around 1am on Sunday (local time).

Gold is worth significantly more in India than in Singapore, which makes it attractive for smugglers.

A gold smuggler, not involved in the incident, told the Daily Express, the maximum any smuggler should attempt to carry internally is 800g.

'We practise carrying the gold and try walking and sitting normally to avoid custom officials," he said.

"Food or water is strictly no during assignments. There are a few exercises we do that make work easier and help us carry more gold.