Police were called to Discovery Park this morning (August 27) due to a protest being held by the Campaign Against Arms Trade East Kent.
Activists barricaded themselves into the site of Instro Precision which they say supplies Israel with weapons to kill Palestinian people in Gaza.
Instro Precision says it is a supplier and system integrator of support equipment for military and commercial electro-optical sensors in the world.
The firm moved to Discovery Park from Broadstairs where it had been the target of numerous protests.
A Kent Police spokesperson said: “Police were made aware of five people involved in a protest at an establishment in Artillery Way, Sandwich at 6.28am. Officers attended and were stood down at 12.30pm.
“A report of criminal damage is under investigation.”