A planned mass escape from an Argentine jail backfired when a 16 stone prisoner got stuck.

Roque Vivas got stuck in a 12ins hole dug in the ceiling by inmates of the prison at Rosario.

Five prisoners had already escaped but another 24 were waiting behind Vivas for their turn.

They ended up having to call prison guards to help their burly fellow convict, reports Las Ultimas Noticias.

A prison spokesperson said: "It was the funniest thing I've ever seen. This fat man was stuck from the waist down and shaking his legs.

"Then all the other prisoners looking really p***ed off because he stopped them from escaping."

The five men who managed to escape are still on the run.

Ananova

so how much does a stone weigh?

DS,

1 stone = 6.3503 kg

that helps

we like lbs.

Fair enough.

1 stone = 14 pounds.

youre just being difficult, Aslan, aren't you? i think you enjoy griefing us, Americans. isnt it easier to say 14lbs than to take a kilogram to the ten thousandths? you have no idea what its like growing up and having a teacher try to tell you that you should learn the metric system because you may meet up with a stubborn Englishman named Aslan on an unexplained mysteries forum someday. i thought she was lying!

A very perspicacious lady, that teacher.

You're lucky. I was going to do it in tons.