Four people have been arrested during a major police operation in Gainsborough following allegations of false imprisonment.
The operation, which involved specialist response teams, centred around an address in Ashcroft Road.
A man and a woman were arrested at the address and another man and woman were arrested outside a shop in Trinity Street.
All four are currently in custody and will be interviewed about the allegation.
Lincolnshire Police would like to thank local residents for their cooperation during the incident.
A spokesman said: “It can appear alarming to see large numbers of officers but such a response is standard in these circumstances to minimise risk to the public and police. This is a local investigation and not in any way related to recent events in France.”