Three men were arrested in an immigration raid on a sweets emporium in Leeds.
The Pakistani trio, aged 18, 29 and 30, were held by Home Office officials following a swoop on Yaadgaar Sweet Centre, on Harehills Road in Harehills, on Wednesday.
They were found to have overstayed their visas and have been detained pending their deportation.
The business, which sells Asian confectionary, was served with a notice warning that it could be fined up to £10,000 for each illegal worker unless bosses can prove they carried out necessary pre-employment checks.
Assistant director Anita Bailey, from the Yorkshire and Humber Home Office immigration enforcement team, said: “These operations show we treat all allegations of illegal working extremely seriously, and those who ignore the rules will not go under our radar.
“Rogue businesses in Leeds are encouraging illegal immigration and undercutting honest employers.
“It is the employer’s responsibility to check their staff have permission to work in the UK and we are happy to work with those who play by the rules.
“Those who choose not to carry out these checks can expect enforcement visits and financial penalties.”