Police activity caused a detour in traffic Thursday morning in the 700 block of Cavella Road in Atlantic Beach.
The incident reportedly involved a subject barricaded in a home. Atlantic Beach Police say that one person is now in custody.
The activity took place near Sailfish Drive East, behind the shops that house Cantina Louie and The Fish Company.
At this time the circumstances surrounding the activity are unclear. First Coast News will update this story as more information becomes available.