Police swooped on Caithness Place, near St Clair Street in Kirkcaldy shortly before 6am.
Witnesses reported seeing a heavy police presence, including riot vans.
It is understood that the incident involved a disturbance at a property, and that a man is in custody after exiting the property.
A police spokesperson said the incident appears to be coming to a close.
This story first featured on our sister site Fife Today.