Eight people have been arrested in early morning raids in Wolverhampton as part of an investigation into a suspected sham-marriage ring.
A team of 60 people, including police and immigration officers, swooped on five houses in the city from 06:00 GMT.
Three men and five women of Czech, Polish and British origin were arrested on suspicion of conspiracy to breach immigration laws.
Officers said the raids were sparked by an “intelligence-led” operation.
Sham marriages typically involve two strangers marrying so one can gain the right to work and claim benefits. Organisers charge up to £10,000 while between £2,000 and £3,000 can be paid to recruit a bride or groom from a European Union country.
Home Office spokesman Andy Radcliffe said: “Today’s arrests are part of an ongoing investigation into a suspected sham marriage ring operating mainly in the West Midlands.
“Where there are suspicions that a relationship may not be genuine we will investigate and, if necessary, intervene to stop it happening.
“Those who seek to cheat immigration law face prosecution and conviction.”
Three people – a 20-year-old Czech man, a 53-year-old Czech woman and a 27-year-old British man – were arrested at a house in Dunstall Road.
Two Czech women, aged 25 and 23, were arrested at a house in Gratis Street.
A 35-year-old Czech woman was arrested at a house in Bright Street while a 33-year-old Czech woman and 32-year-old Polish man were arrested in Carter Road and Lowe Street respectively.