Three men have been arrested by Home Office officials at a Corby restaurant.
Acting on intelligence, immigration enforcement officers visited Bollywood Dreams in Greenhill Rise on Thursday last week (May 30).
Checks revealed that three Bangladeshi men had no permission to be in the UK.
All three men – a 36-year-old who had overstayed his visa and a 32-year-old and 22-year-old who had both entered the UK illegally – were taken into immigration detention pending their removal from the country.
The business now faces a potential fine of up to £30,000 - £10,000 per illegal worker – unless it can demonstrate that appropriate pre-employment checks were carried out such as seeing a passport or Home Office document.
Louise Stokes, from Home Office immigration enforcement, said: “We are working hard to track down and remove from the country those who seek to abuse the UK’s immigration laws.
“Operations like this are carried out regularly and we have no intention of slowing down.
“The public can be a huge help in our work and I urge people with information about suspected immigration abuse to get in touch.”
Officers reported concerns to Northants Fire Service after they found a blocked fire exit and beds on the premises where staff were sleeping.
The fire service served a prohibition notice preventing the premises being used for sleeping and all fire exits were made accessible before business could be recommenced.
Anyone with information about immigration crime can contact Crimestoppers on 0800 555111 anonymously or visit www.crimestoppers-uk.org.
Employers unsure of the steps they need to take to avoid employing illegal workers can visit http://www.ukba.homeoffice.gov.uk/business-sponsors/preventing-illegal-working/ or they can call the Home Office Employers Helpline on 0300 123 4699.