Ayala faces up to nine years in jail over the chilli finger scam

Anna Ayala, 39, faces up to nine years in jail while her husband Jaime Placencia, 43, could get 13 years.

Ms Ayala's claim is said to have cost the third-largest US burger chain $2.5m (£1.3m) in lost sales.

The woman had claimed she had bitten into the finger at a Wendy's restaurant in San Jose, California, in March.

Investigators later found the finger belonged to construction worker Brian Rossiter, who had lost it in an industrial accident and sold it to Mr Placencia for $100.

Ms Ayala initially claimed she had bitten down on the finger which she described as "kind of hard, crunchy".

She said the incident had caused her "great emotional distress".

She has since withdrawn her lawsuit against Wendy's.

The fast food chain has insisted all along that the finger did not originate at one of its establishments as no staff had lost a digit and no suppliers had reported any accidents involving hands.

It says it has had to sack employees because of the loss in sales.

The couple have been in police custody since their arrest earlier this year.