A BLOODY knife attack during a church service in Kentucky has left one person badly injured as heavily armed police move in to seal off the area.

The Sun reports that a police swat team and helicopter were involved in the operation to detain the person responsible for the knifing.

A witness said the suspect was held down quickly by up to 50 people in Hillvue Heights Church before cops arrived at the scene.

joeimel: RT bgdailynews: UPDATE: Police say stabbing at church an isolated domestic incident https://t.co/bD2LCjxcuL — 8=D (@LU4PM1T) August 14, 2016

It is currently unclear what the motivation behind the stabbing is, but there is no suggestion at present that it was terror related.

“It’s scary, but in today’s society this can happen anywhere,” said one church goer.

The attack comes after the Charleston Church massacre when white supremacist Dylan Rooff carried out a bloody attack at Emanuel African Methodist Episcopal Church in Alabama.

Roof, 21, killed six women and three men after joining a prayer group at the church.

This article originally appeared in The Sun