Have the undercover guys light up the on-scene commanders with UV lasers so the snipers can take them out. Subsonic ammo from suppressed bolt actions could do that without anybody catching on to what's happening for a while.
I would be more inclined to identify them and kick their doors down at 3 am, a minimum of twenty years for terrorism and execution if violence is included.
And go after any lawyer or politician that aids them and destroy their career/business/family.