received anonymously:

"IN THE NIGHT OF 3 OCTOBER WE WENT TO THE HOUSE OF GOTTLIEB KELLER, SECRETARY OF THE BOARD OF DIRECTORS AND CORPORATE EXECUTIVE OF ROCHE. WE MADE A BIG MESS. RED PAINT ALL OVER THE CARS THE DOOR THE WALLS AND THE MAILBOXES. 2 CARS PAINTSTRIPPERED AND FRONT DOOR GLUED. GOOD MORNING MR KELLER. IF YOU WANT TO VISIT HIM HE LIVES IN ENGLISCHVIERTELSTRASSE 21 IN ZURICH, SWITZERLAND.
STOP THE BUSINESS WITH HLS.
ALF"